Question

For the following exercises, evaluate the expressions, given functions f, g, and h:
f(x) = 3x – 3 g(x) = 8– x^2 h(x) = -3x^2+3x-1

1. 4f(2)-4g(-1)

Answer 1

Answer:

- 16

Step-by-step explanation:

Evaluate f(2) by substituting x = 2 into f(x) , that is

f(2) = 3(2) - 3 = 6 - 3 = 3

Evaluate g(- 1) by substituting x = - 1 into g(x) , that is

g(- 1) = 8 - (- 1)² = 8 - 1 = 7

Thus

4f(2) - 4g(- 1)

= 4(3) - 4(7)

= 12 - 28

= - 16