Question

Given f(x)=6(1-x), what is the value of f(-8)?

A) 54
B) 42
C) -8
D) -42

I need a proper answer with evidence, please.

Answer 1

The answer would be D) -42. The question is asking for the value of the equation when x is equal to -8. Substitute -8 into any place x appears in the previous equation and solve.
so, it would look like this: f(-8)=6(1-8)
1-8 = -7. 6(-7) = -42.