Question

Given the function f(x) = −5x2 − x + 20, find f(2).

Answer 1

f(2) = - 2

Explanation:

To evaluate f(2) substitute x = 2 into f(x)

f(2) = - 5(2)² - 2 + 20 = - 5(4) - 2 + 20 = - 20 - 2 + 20 = - 2