It cwill cost jessica and her friends a total of 47.50 to buy movie tickets how much will each person pay for their ticket

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?

Simplify. (-2)^-3 a. -8 b. -1/8 c. 1/8 d. 8

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y