Consider the function

Question

f(x)=3x²+ 4x-2

Find f(3)

Answer 1

Hi Ayrianna,

f(x)=3x²+ 4x-2

f(3) means to evaluate the function at an input of 3.

So, you will replace each x in the function rule with 3.

f(3) = 3(3)² + 4(3) - 2

f(3) = 3(9) + 12 - 2

f(3) = 27 + 12 - 2 = 37