Question

For the function f(x)=3x²-7, find the value of f(x) when x=3.

Answer 1

Explanation:

Simply plug in a 3 where you see an x in the function:

`f(3)=3(3)^2-7` so

f(3) = 3(9) - 7 and

f(3) = 27 - 7 so

f(3) = 20