Which two expressions are equivalent? O (7•y) + 4 and (74) + y
O 4(7 + y) and 4.7 +4.y
0 (7•y). 3 and (7.y) + (7.3)
O (7.y). 3 and (7 + y). 3

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?

Find two numbers if their sum is 91 and the ratio is 6: 7?

*segment an is an altitude of right ? abc with a right angle at a. if ab = 2root 5 in and nc = 1 in, find bn, an, ac.