A cell phone company charges a flat rate of $4.75 per month, with an additional charge of $0.19 per minute. How many minutes did Alexandra talk on her cell phone if her monthly bill was $27.55?

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?

If 3 3/4 lb. of candy costs 20.25 how much would 1lb. of candy cost

The table shows the number of hours orlando spent at football practice last week. select the appropriate numbers below to complete the model to find the number of hours orlando spent practicing on tuesday and friday.