Question

If f(x) = 2x2 + 1, what is f(x) when x = 3?
O 1
O 7
O 13
O 19

Answer 1

THE ANSWER IS 19 JUST TOOK THE UNIT TEST

Explanation:

Answer 2

19

Explanation:

f(x) = 2x^2 + 1

Let x= 3

f(3) = 2 * (3)^2 +1

Exponents first

= 2 * 9+1

Then multiply

= 18+1

Add

= 19