Question

If f(x)=5x+40,what is f(x) when x= -5?

Answer 1

15

Explanation:

f(x)=5(-5)+40

f(x)=-25+40

f(x)=15

Answer 2

`f(-5) = 15`

Explanation:

Step 1: Set x to -5

`f(-5) = 5(-5) + 40`

`f(-5) = (-25) + 40`

`f(-5) = 15`

Answer:
`f(-5) = 15`