Question

If f(x) = 5x + 40, what is f(x) when x = –5? pls help a. -9 b. -8 c. 7 d, 15

Answer 1

The answer is D) 15

Explanation:

F(x)= 5x + 40 (substitute -5 for x)

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

= F(x)= -25+40

F(x)= 15

Answer 2

D.

Explanation:

f(5) = -25 + 40

f(5) = 15