The answer I have in the box isn’t right

What is the ratio if counted 14 robins out of 150

Nine more than four times a number is the same as one less than twice the number. find the number?

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