12. A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4 r2 for the surface area of a sphere. (1 point)

Question

64 x2 + 32 x + 4
64 x2 + 16 x + 4 *my answer
4 x2 + 32 x + 64
4 x2 + 4

Answer 1

4(4x+1)^2 = 4(16x^2+8x+1)

Better double-check your answer.

Answer 2

Thank you, and found it was the first one.

Answer 3

We have a winner!