School

7)

Seaside Bike Shop rents bikes for $10 plus $4 per hour. Jack paid $30 to rent a bike. Which equation, when solved for x, gives the

number of hours he rented the bike?

5 hr

Step-by-step explanation:

totalcost (x) = $10 + ($4/hr) x = $30

Solve this for x. Start by subtracting $10 from boths sides, obtaining:

($4/hr) x = $30 - $10, or

($4/hr) x = $20

Dividing both sides by ($4/hr), we get x = ($20) / ($4/hr) = 5 hr

If your doing usatestprep your answer will be: B) 4x + 10 = 30

Step-by-step explanation:

4x + 10 = 30

4x = 20

x = 5, Jack rented the bike for 5 hours.