Respuesta :
You have 5 dollars that it costs PLUS 0.50 PER mile.
Writing your equation...
0.5m (m=per mile extra)
5(how much it initially costs)
0.5m+5
Thus, your answer, C.
Hope this helps!
The answer is C because 50 cents per mile would look like .50m and then all you have to do is add the 5