1/3m- 1- 1/2n when m= 21 and n = 12

Given this information, which expression must represent the value of b?

What is the order of magnitude for the number of liters in a large bottle of soda served at a party

Bill works as a waiter and is keeping track of the tips he ears daily. about how much does bill have to earn in tips on sunday if he wants to average $22 a day? tips by day tips (dollars) monday tuesday wednesday thursday friday saturday $14 $22 $28 $36