Question

Evaluate the function.

`f(x)=3x^(2) +2x\\\\f(3)=`

Answer 1

Simply plug 3 into the equation.

`f(3) = 3(3)^2+2(3) = 3(9) + 6 = 27 + 6 = 33\\\\\\f(3) = 33`

Answer 2

Explanation:

Plugin x = 3 in the function

f(x) = 3x² + 2x

f(3) = 3*(3)² + 2*3 {3² = 3*3 = 9}

= 3*9 + 6

= 27 + 6

f(3) = 33