David has a collection of computer games. last year, he had 400 cds in his collection and this year he has 120% as many cds as he had last year. what is the size of his cd collection this year?

Tabby sells clothing at a retail store, and she earns a commission of 6.25% on all items she sells. last week she sold a pair of jeans for $32.50, a skirt for $18.95, and 2 blouses for $14.95 each. what was tabby's total commission? a $4.15 b $5.08 c $81.35 d $348.60