EXPLANATION
Charge ---> $1.75
Plus------> $0.75/ mile traveled
Total cost ----> $4.75
Let's call m to the traveled miles, so the appropiate algebraic expression is:
0.75m + 1.75 = 4.75
Subtracting 1.75 to both sides:
0.75m +1.75 - 1.75 = 4.75 - 1.75
Simplifying:
0.75m = 3
Dividing both sides by 0.75:
m = 3/0.75
Simplifying:
m= 4
Answer: The trip is 4 miles.