How do i divide an exponential function?

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

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

If y varies directly as x2 and y=6 when x=6, find the constant of variation.