Are 2:7 and 10,000:35,000 equivalent?

36 inches/second = yards/minute how many yards?

Which of the following is true for the relation f(x)=2x^2+1

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?