Isn’t there supposed to be a picture?
A. 4 (is the only factor for expression -48xyz -24xy +40)
Tony will get $8.26 back.
Here's why:
First, let's take $1.85 away from $13.59, because he has a coupon. That leaves us with $11.74
Second, do $20 - $11.74 to get your answer, $8.26
=> 8+x = 15 => x = 15-8=7