Question

Evaluate the function
f(8) + g(-1) for the functions f(x) = -2x + 9 and g(x) = x²-2

Answer 1

- 8

Explanation:

To evaluate f(8) substitute x = 8 into f(x)

f(8) = - 2(8) + 9 = - 16 + 9 = - 7

Similarly for g(- 1)

g(- 1) = (- 1)² - 2 = 1 - 2 = - 1

Then

f(8) + g(- 1) = - 7 + (- 1) = - 7 - 1 = - 8