AnOtHer geometry question.

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

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

A+b= 17, ab=70, find the value of |a-b|