Question

Given f (x) = 5(2 - x), what is the value of f (-4)?

Answer 1

f(- 4) = 30

Explanation:

To evaluate f(- 4) substitute x = - 4 into f(x), that is

f(- 4) = 5(2 - (- 4)) = 5(2 + 4) = 5(6) = 30