Help me will be rewarded if you the first and right lost of points going to 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?

Which matrix multiplication is possible?

What expression is equivalent to 1/2(2+3x-6)