Question

If f(x) = 10 – x2 and g(x) = 3f (x) – 8, then which of the following is the value of g(-2)?

Answer 1

10

Explanation:

g(x) = 3(10-x^2)-8=>30-3x^2-8=>-3x^2+22

then substitute -2 in x

-3(-2)^2+22

-3(4)+22=-12+22=10