The area of a rectangle is 6 + 3x square feet. Which of the following expressions could represent the lengths of the sides of the rectangle? A.
6 and 3x
B.
3 and 2 + x
C.
6 and 6 + x
D.
3 and 2 + 3x

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 between 80 and 120.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 between 80 and 120.