Pls pls pls help me in this

Lin is shopping for a couch with her dad and heard him ask the salesperson “how much is your commission? ” the salesperson says that her commission is 5 1/2% of the selling price. a.how much commission will the salesperson earn by selling a couch for $495? b.how much money will the store get from the sale of the couch?

Solve this problem! extra ! 3025/5.5 = a/90.75 / = fraction

Given δjkl : δxyz, find x. a)10 b)12 c)16 d)20