Evaluate: 2·5\4^-2
A) 5\8 B
B) 8\5
C) 40
D) 160

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?

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c

What is the benefit of converting measures in a ratio to the same unit