Question

Given the function f(x) = −5x2 − x + 20, find f(3).

Answer 1

-28

Explanation:

put 3 where is x

f(x) = −5(3)^2 − (3) + 20

exponents flrst

(−5*9) − (3) + 20

-45 -3 +20

-48 + 20

-28