Question

5) If f(x)=x2-x, what is f(-5)? A. -30 B. -20 C. 20 D. 30

Answer 1

You simply plug it in.

f(x) = x^2 - x
f(-5) = -5^2 - (-5)
f(-5) = -25 - (-5)
f(-5) = -20

hope this was helpful for you.