Answer
9n + 5
Work Step by Step
Because you are paying 9 dollars an hour to rent a bike and a 5 dollar rental fee for the helmet, you must first multiply 9 by the number of hours you rented the bicycle. In this problem the number of hours you rented the bicycle is represented by the variable n. So the equation would look like 9n. Lastly, you want to add 5 to your equation because you are still paying a rental fee. So the new equation is: 9n + 5.
