Question

The cost to rent a jet ski is $80 per hour. in addition there also includes fee for a lesson on how to use the jet ski. Steve rented a jet ski for 3 hours and the total bill was $265. Write the equation for the total cost of renting a jet ski y for x hours.

Answer 1

`y=80x+25`

Explanation:

Let

x ----> the number of hours

y ---> the total cost of renting a jet ski in dollars

we know that

The linear equation in slope intercept form is equal to

`y=mx+b`

where

m is the slope or unit rate of the linear equation

b is the y-intercept or initial value

In this problem we have

The slope is equal to

`m=\$80\ per\ hour`

we have the ordered pair (3,265)

substitute in the linear equation

`265=80(3)+b`

solve for b

`265=240+b`

`b=265-240`

`b=\$25` ----> fee for a lesson on how to use the jet ski

substitute

`y=80x+25`