Respuesta :

Answer:

[tex]15[/tex]

Step-by-step explanation:

f(x) = 5x + 40

If x = -5, that means that f(-5)

So you need to substitute the number -5 for the variable x in the equation.

5x + 40

Substitute:

5(-5) + 40

5 * -5 = -25

-25 + 40

15

tonyaguinn33
15, step by step: 5(-5)+40= f(x) [ ur plugging in x ] so 5(-5) is -25 now u have -25+40 u do the math or do it on a calculator and u get 15