Does anyone understand this really need help

Find the value of the variable and the length of each secant segment.

Tom had a total of $220 and he spent $35 on a basketball ticket . what percent of his money did he have left?

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