6x+9y= -15
-2x+y= -15

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

At a sale this week, a desk is being sold for $213. this is a 29% discount from the original price. what is the original price?

Danielle earns a 7.25% commission on everything she sells at the electronics store where she works. she also earns a base salary of $750 per week. what were her sales last week if her total earnings for the week were $1,076.25?