Last year, the city library collected 117 used books for its shelves. this year, it collected 3 times as many books. how many books did it collect this year?

The amount of energy it takes to lift a box might be a function of which of the following

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?

The reflexive property of congruence lets you say that ∠pqr ≅