PLZ HELP ME WITH THIS

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

Find the solution of this system of equation -7x+y=-20 9x-3y=36

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total