Emma bought 12 packages of rolls for a party. There were 13 rolls in a package. After the party there were 8 rolls left over. How many rolls were eaten?

There were __ rolls eaten.

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

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?