Question

If f(x) = 2x2 + 1, what is f(x) when x = 3?

Answer 1

When x is equal to 3, f(x)= 13

Explanation:

f(x) is basically y so it is asking us to find y when x=3

2x2+1

2*3*2+1

12+1= 13

When x is equal to 3, f(x)= 13

Hope this helps!