3 years ago

Let f(x) = 4x − 3. If f(a) = 9 and f(b) = 5, then what is f(a + b) ?

1 answer:

7 0

F(x) = 4x - 3

f(a) = 4a-3

9 = 4a-3

4a = 12

a = 12 / 4

a = 3

_____________________

f(b) = 4b-3

5+3 = 4b

8 = 4b

b = 8 / 4

b = 2

___________________

f(a+b) = 4(a+b) - 3

f(a+b) = 4(3+2) - 3

f(a+b) = 4(5) - 3

f(a+b) = 20 - 3

f(a+b) = 17

You might be interested in

25) Which graph represents the equation below? ) = w+ 2 A ܠܐ 5 4 (2, 4) 3 2 1 (-2,0) -5 -4 -3 -2 -1 0 -1 x 1 2 3 4 5 -2 -3 -4 -5

victus00 [196]

Answer:

Can you attach a pic please ?

Step-by-step explanation:

6 0

3 years ago

There are 4,389 dogwood trees in the state park. The park workers are going to plant 342 more trees. How many trees will there b

Dmitrij [34]

Answer:

4731

Step-by-step explanation:

4,389+342=4,731

6 0

3 years ago

There is anyone who r from India

nataly862011 [7]

Answer:i dont think so

Step-by-step explanation:

7 0

3 years ago

Which number is relatively prime to 63?<br> A. 114<br> B. 99<br> C. 87<br> D. 25

ElenaW [278]

Answer:

The answer is 114 which is the first answer which is A

Step-by-step explanation:

The rest 99, 87, and 25 just dont

Hope this helps you

7 1

4 years ago

What is the answer to 1/8(8x+15)=24

Korvikt [17]

Answer:

x = 177/8

Step-by-step explanation:

First, we must get rid of the fraction by multiplying 8 by both sides.

8 · 1/8(8x + 15) = 24 · 8

1(8x + 15) = 192

8x + 15 = 192

Then we simplify. First subtract 15 from both sides.

8x + 15 - 15 = 192 - 15

8x = 177

Then divide 8 from both sides.

8x/8 = 177/8

x = 177/8

4 0

3 years ago