In this question, we're trying to find how many hours Mike had the bike for.
We know that 13 dollars as a flat rate.
We also know that they charge 13 dollars and hour.
Mike paid a total of 67 dollars for the bike.
Lets represent this as an equation:
67 = 9x + 13
x = hours the bike was rented
Solve for x:
67 = 9x + 13
Subtract 13 from both sides
54 = 9x
Divide both sides by 9
6 = x
This means that Mike rented the bike for 6 hours.
Answer:
6 hours