Question

Use the quadratic function to predict f(x) if x equals 2

A. f(2)=125

B. f(2)=87

C. f(2)=111

D. f(2)=63

Answer 1

To find f(2), we plug in 2 for every x:

`f(2) = - 3 {(2)}^(2) + 180(2) - 285 \\ = - 12 + 360 - 285 \\ = 63`
We simplify to find the answer is D. f(2) = 63