What are the factors of x^2-81

A.) (x+9) (x-9)

B.) (x-9) (x-9)

C.) (x+3) (x-27)

D.) prime

Which is the focus of a parabola with equation y2=4x

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1

Assume that adults have iq scores that are normally distributed with a mean of mu equals 100 and a standard deviation sigma equals 20. find the probability that a randomly selected adult has an iq less than 132. the probability that a randomly selected adult has an iq less than 132 is?