What is the angle of rotation of the image?
A. 60°
B. 90°
C.120°
D. 180°

Use the inverse of the function y=x^2-18x to find the unknown value [tex]y = \sqrt{bx + c \: + d} [/tex]

Monthly water bills for a city have a mean of $108.43 and a standard deviation of $32.09. find the probability that a randomly selected bill will have an amount greater than $155, which the city believes might indicate that someone is wasting water. would a bill that size be considered unusual?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?