Answer: 166.667 miles
Explanation:
For the first company, the cost can represented by the equation: y=0.25m +50+15
Which is the same as y=0.25m +65
For the second company, the cost can represented by the equation:0.35m+40
m is the miles driven
To find at after how many miles they cost the same, I will set both equations equal to each other to solve for m
0.25m+65=0.35m+40
-0.25m -0.25m
65=0.15m+40
-40 -40
25=0.15m. Divide both sides by 0.15
166.667=m
So after 166.667 miles, the companies charge the same.
You can also round it again: 166.67 or 166.7 or 167