Question

If f(x) = 2x^2 + 1, what is f(x) when x = 3?

A.1

B.7

C.13

D.19

Answer 1

answer is D.19

x=3,

Substituting value of x with 3,

We get, 2*3^2+1

=2*9+1

=18+1

=19.