Kaitlin purchased a prepaid phone card for $15. long distance calls cost 21 cents a minute using this card. kaitlin used her card only once to make a long distance call. if the remaining credit on her card is $5.76, how many minutes did her call last?

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