Mathematics Middle School

The function is given by the formula f(x)=3x+2.
a) Find f(7)
b) Find the value of x such that f(x)=15

Answers

Answer 1

Answer:

(a) f(7) = 23

(b) x = 13/3

Step-by-step explanation:

Step 1: Define

f(x) = 3x + 2

(a) f(7) is x = 7

(b) f(x) = 15

Step 2: Substitute and Evaluate

(a) f(7) = 3(7) + 2

f(7) = 21 + 2

f(7) = 23

(b) 15 = 3x + 2

13 = 3x

x = 13/3

Related Questions

At a restaurant, Brianna and Naomi each order an appetizer for $6.50 and an entree for $9.75. They decide to leave a 20% tip based on the total bill before tax. What is the total value of the tip they will leave?

Answers

Answer:

leave a $3.25 tip

Step-by-step explanation:

All decide to leave a 20% tip based on the total bill before tax.

Total value of tip is $5.85

Given :

At a restaurant, Brianna and Naomi each order an appetizer for $6.50 and an entree for $9.75.

Total bill = appetizer cost for three persons + entree fee

Total bill =[tex]6.50 (3)+9.75=29.25[/tex]

So total bill is $29.25

Tip left is 20% of the total bill

Now we find the total value of tip

Total value of tip =20% times 29.25

[tex]Total \; value =0.20 \cdot 29.25=5.85[/tex]

The total value of tip is [tex]5.85[/tex] dollars

Learn more:  brainly.com/question/19298065

△ABC ~ △DEF as shown in the diagram below:


AB corresponds to which side?

BC
ED
EF
AC

Answers

AB corresponds to ED because both are perpendicular lengths
The answer to your question is Ed

Round to the nearest tenth if neccessary
69.904 divided by 34

Answers

Answer:

2.056

rounded to the nearest tenth: 2.1

Plz mark brainliest!! :DD

Answer:

2.056

Step-by-step explanation:

Trying this again... Do both if you can idk this is the last of my points

Answers

Triangular prism


84 squared units
it should be a triangular prism at 84 units squared correct me if wrong

Why is the percent increase from 45 to 75 not equal to the percent decrease from 75 to 45? Select three options.
The amount of change is different for the percent increase and the percent decrease.
The ratio of the percent increase is not the same as the percent decrease.
The ratio for the percent increase has a smaller denominator than the percent decrease.
The ratio for the percent increase has a different numerator than the percent decrease.
The original amount for the percent increase is different from the original amount for the percent decrease.

Answers

Answer:

The ratio for the percent increase has a smaller denominator than the percent decrease. 4. The ratio for the percent increase has a different numerator than the percent decrease.

Answer: c and d

Step-by-step explanation:

help me i need to do this before 4:00

Answers

Answer:

43.9236

Step-by-step explanation:

35 + (3 * 1.89) = 40.67

40 * 1.08 = 43.9236

Answer:43.91 is the answer

Step-by-step explanation:well you do the question and answer it

Veronica took out a 48-month loan of $5,500 to make some home improvements. At a simple interest rate of 3.25%, how much total Will she pay?

A) 3,378.45
B) 37,784.50
C) 12,504.25
D) 12,595.80
E) 12,628.45

Answers

The awnsere is letter E 12,628.45

250% of 146 is ____
Explain your method.

Answers

Answer:

2.50*146=365

Step-by-step explanation:

The answer is 1 yr

PLZ help me if your question is good enough i will give you branliest

Answers

2:8 and no it will not change because the ratio remains the same, the only difference is they are adding more of each. However, dried fruit to sunflower seeds stays the same.

help please it is due tonight

Answers

Answer:

Step-by-step explanation:

Bill studied t hours for a big test. Catherine studied one third as long. Write an algebraic expression for long Catherine studied.

Answers

Answer: x= 1/3t

Step-by-step explanation: I think

x=1/3t i’m pretty sure

What is the extra information in the following problem?
Theo bought two books published in 2005 for $7.99 each.
He received $4.02 in change. How much money did he give the clerk?

Answers

Answer:

Step-by-step explanation:the book was published inn 2005 is the extra info

Damian earned $166.10 at his job when he worked for 11 hours. How much money
did he earn each hour?
On the double number line below, fill in the given values, then use multiplication or
division to find the missing value.
dollars
0
o
hours
w
Answer: $
Submit Answer
Sa
Introde
**SHO

Answers

Answer:

15.1 dollars an hour

Step-by-step explanation:

Answer:

he made 15 dollars and 1 cent an hour.

Step-by-step explanation:

Sherry just got a part time job working at a smoothie making shop. Sherry found out she will be making $350 in her paycheck that she receives every 2 weeks. Use the ratio of $350 to 2 weeks to determine how much money Sherry will make in 13 weeks.

Answers

Sherry will make 9,100 in 13 weeks

Answer:

$175 per week.

Step-by-step explanation:

175 times 13 is 2275 dollars 350 divided by 2 is 175

Please help as soon as possible :)

Answers

Answer:

helppp

Step-by-step explanation:

What improper fraction has the same value as 12 3/4?

A) 51/4
B) 48/4
C) 123/4
D) 12/4

Answers

Answer:A

Step-by-step explanation:(12*4)+3=51

Answer (A)51/4 is the answer

Photo is below; Giving brainliest

a.135 in^2
b.286 in^2
c.537 in^2
d.201 in^2

Answers

Answer:

EZ is c.537in^2

It’s letter c. 537 in^2

I don't understand this- I'm trash at math TvT

Answers

Answer:

1. 28.52 min

2. 8.23 miles per min

Step-by-step explanation:

1.

[tex]3.1mi(\frac{9.2min}{1mi})=28.52min[/tex]

2.

[tex]25.5min/3.1mi= 8.2258 \frac{mi}{min}[/tex]

Sammy buys his clothes at SuperDuper Discount Store. On Saturday, he bought shoes regularly priced at $40 for 25% off, and a jacket regularly priced at $100 for 30% off. What is the total amount that he will have to pay? (Omit sales tax.)

Answers

you would have 10% chance

Step-by-step explanation:

I know, that's probably a lot to take in! :D

40 × 25% = 10

40 - 10 = 30

The final price of the shoes is $30.

100 × 30% = 30

100 - 30 = 70

The final price of the jacket is $70.

30 + 70 = 100

A N S W E R:

The total price of the items Sammy bought (no including sales tax) is $100.

A certain shade of pink is created by adding 3 cups of red paint to 7 cups of white paint.

How many cups of red paint should be added to 1 cup of white paint? Do not include units (cups) in your answer.

Type your answer as a fraction or decimal. If you enter a decimal, round to the nearest tenth.

Answers

Answer: The answer is 0.429 (0.43 or 0.4)

Step-by-step explanation: When you do 7/3, you get 2.33. So, you take 1 for the 1 cup of red paint and divide it from 2.33 (constant of proportionality) and you get 0.4!

A map of a park says its scale is 1 to 100.

Give an example of how this scale could tell us about measurements in the park.

Answers

Answer:

Well you can see the scale of like benches from far away and close up

Step-by-step explanation:

Find the image of the point (2, 4) if it is move 7 steps to the left and 5 steps up.
(4, 2)
(2, 4)
(-5, 9)
(9, 5)

Answers

Answer:

(-5,9)

Step-by-step explanation:

The the answer is -5,9

Show an example of converting a rational number to a decimal using long division and declare as terminating or repeating.

Answers

Answer:

look at explanation

Step-by-step explanation:

if you try to turn 1/3 into a decimal it will go on forever and turn into 0.333.......

and go on forever. The same thing happens when you use 4/3.

Answer:

Take a fraction (Rational Number) and divide the top number (Numerator) by the bottom number (Denominator).

Step-by-step explanation:

As an example, let's use 7/8. In this case, you will take 7 and divide it by 8. The quotient will be 0.875, which is this rational number in decimal form. Sometimes, the decimal will repeat after dividing the numbers, for example, 1/3 will become 0.3 where the 3 is repeating. This also works with mixed numbers. You take the fraction and used the process I just discussed, then you take the whole number and put it in front of the decimal point.

Seirra found that 15 meters is equivalent to 49.2 feet which of the following is an equivalent ratio


A.3 to 8.84

B. 5 to 18.22

C.7 to 22.96

D.9 to 25.32

Answers

A.........................................                                                                                                                                  

Answer:

I would have to say A but I could not technically find the right answer in meters. You should try looking at yards. Hope this helped!!!

Step-by-step explanation:

find the values of a,b,c,d,e and f
Please help

Answers

Answer:

a=30

b=15

c=3

d=30

e=10

f=20

Math again, please help it’s a big grade and I have to turn it in today

Answers

Answer:

1-D

2-C

3-C

4- 5 1/3

Step-by-step explanation:

Hope this helps. For each, just remember to try each one and decide if it works out just in case you need to show work.

the answer should be all the C because i know

All of the following are irrational except _____.

√5
√9
√7
OR
√11

Answers

Answer:

9

Step-by-step explanation

Sqaure root of 9 is 3, a rational number

The correct answer is 9

i need help wit this

Answers

Answer:

-21.375

Step-by-step explanation:

Answer:

-21 3/8

Step-by-step explanation:

Cant you just use google calculator.

Which ratio is equivalent to 1 to 2?
Group of answer choices

2 to 4

2 to 1

1 to 4

17

Answers

Answer:

2:4 is the correct answer

Step-by-step explanation:

2 to 4 is the correct answer

mallory is 2 years older than three times her brother jake's age. which expression would you use to represent mallory's age

Answers

Answer:

x·3+2=y

Step-by-step explanation:

Jake's age= x

Mallory's age= y

2+3x because she is 2 years older 3 times his age(x)
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