Question

Amy wants to rent a bicycle for the day. The company charges $12 to rent the bike, plus $6 per hour. If Amy has a budget of $42, for how many hours can Amy rent the bike?

Answer 1

Using the equation y=6x+12, where x is the number of hours and y is the total cost for the given value of x, you can plug in 42 for y and solve:

42=6x+12
42-12=6x
30/6=x
5=x

Thus, Amy can rent the bike for 5 hours.