Answer:
50 Miles
Explanation:
The equations would be Company A- y=40+0.30x and Company B- y=20+0.70x
When you substitute x for 50 you get A- 40+0.30(50)=40+15=55$ and for B- 20+0.70(50)=20+35=55$ therefor the total miles to be the same for both would be 50 miles.