Three water pumps can move a total 1700 gallons of water per minute from a flooded mineshaft. If engineers wnat to remove at least 5500 gallons per minute, how many pumps will they need to be operating? The answer choices are:
9.7 water pumps
9 water pumps
10 water pumps
93 water pumps

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

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?

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin