4x^2+16x-4=?

A. 2x(2x^2+8x-2)
B. 2(2x^2+8-2)
C. 4x(x^2+4x-1)
D. 4(x^2+4x-1)

3. find the radius of circle p.4. find y.

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

Which expressions are equivalent to -7+3(-4e-3)? choose all answers that apply: choose all answers that apply: a -4(3e+4)? 4(3e+4) b 12e12e c none of the above