Answer: 71.429 miles
Explanation:
The charge for the rental truck can be represented by the equation: y= 0.28m+80
m is the miles driven
y is the total cost
Plug in 100 for y because that’s how much you have to spend
100=0.28m+80
-80 -80
20=0.28m. Divide both sides by 0.28
71.429 miles
You can round it again if you want
71.43 or 71.4 or 71