Which expression is equivalent to the expression shown?

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

This is about circle theorems. someone asap : (

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?