What is the cost of a rental for 3 hours?

Question

The Lakeside Marina charges a $35 rental fee for a boat in addition to charging $15 per hour.

 

You can represent the situation with the following equation: y=15x+35

Answer 1

C(H)= 15H + 35

C(3) =15(3) + 35 = 45 + 35 = 80

C (3) = 80

Answer 2

Hi Chris! This problem is fairly easy to do, since we already know that the equation is y = 15x + 35. In the equation, x represents the number of hours and y represents the total cost. So if we want to know the cost of a rental for 3 hours, plug in 3 for x in the equation and solve for y. The equation would then look like this: y = 15 (3) + 35. When you solve this, you get y = 80. So it will cost $80 for a rental for 3 hours. Hope this helps!