Mrs Jones has 1 cup of milk in a measuring cup. She pours out 1/3 to use in a recipe. How much does she have left

Factor the expression using gcf 9b+45

Julie goes to the sports store and spends $40.50 before tax. she buys a pair of shorts for $21.75 and 3 pairs of socks that each cost the same amount. how much does each pair of socks cost? $$

Can someone show me step by step how to do this?