Multiply choice ~! please do this quickly. i need to hand this in..

Given this information, which expression must represent the value of b?

Write 17/20 as a decimal and as a percent.

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