Which expression is equivalent to 16x^4 - 64? (4x^2 - 8)^2
(8x^2 - 32)^2
(4x^2 + 8)(4x^2 - 8)
(8x^2+32)(8x^2-32)

Angela took a general public aptitude test and scored in the 88th percentile for aptitude in accounting. what percentage of the scores were at or below her score?

Ftara spends $219 a month for her car payment and she makes $3,200 a month, what percent of her monthly income is spent on her car payment?

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.