Tell me the answer for each box

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

Prove that 16^4-2^13-4^5 is divisible by 11.

In a timed typing test lara typed 63 words per minute.estimate the number of words she should be able to type in half in hour show your work