X = $20 bills
6x = $5 bills
x(20) + 6x(5) = 1450
20x + 30x = 1450
50x = 1450
x = 29
6(29)= 174
If its on a graph just look for the spot where the line meets the y and x-axis
The answer is 80, 2x+3x+4x=180, so x=20. 20*4=80.
X+60 + 70 = 180 (straight line)
x+130=180
x= 180 -130
x=50
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
