Math, I NEED HELP.c:
posted by Izzy. .
A rental company charges a flat fee of x dollars for a floor sander rental plus y dollars per hour of the rental. One customer rents a floor sander for 4 hours and pays $63. Another customer rents a floor sander for 6 hours and pays $87. Find the flat fee and the cost per hour for the rental and how much it would cost if someone wanted to rent a sander for 11 hours.

D:

equation:
cost = yt + x, where t is the number of hours
case1:
4y + x = 63 > x = 634y
case2:
6y + x = 87 > x = 876y
so 634y = 876y
2y = 24
y = 12
back into 1st equation:
x = 634(12) = 15
cost equation:
cost = 12t + 15
so for 11 hrs
cost = 12(11)+15
= 147
Respond to this Question
Similar Questions

algebra
A tennis club offers two payment options: Option1: $35 monthly fee plus $4/hour for court rental Option 2: No monthly fee but $6.50/hour for court rental. Let x = hours per month of court rental time. a) Write a mathematical model … 
Honors Algebra
Hi, I need some help with my Algebra. This is how it goes: Yet another company subsidiary of the company is a company that provides a dumpster rental service. The company will deliver a dumpster to a customer's site for a onetime … 
algebra
Simone rented a truck to move to a new apartment last month. The rental company charges a rental fee of $25.00 plus $0.50 per mile. Which of the following best represents the yintercept in this situation? 
Statistics
a city needs to perform some road maintenance and will rent excavator m achines from a company. Each excavator will work at least 1 hour, but no more than 4 hours at a time. It is known that the working time of each excavator is evenly … 
math
Tide's boat rental charges a rental fee of $200 plus $30 per hour. Surfs rental charges a rental fee of $240 plus $25 per hour. For what number of hours is the boat rental cost the same at each rental business 
Math
RentaCar company charges for renting a car $35 plus $15 per day (unlimited mileage). Ley x denote numer of days and y  denote the total cost of car rental. Write the equation that expresses y (in dollars) in terms of x (days of … 
Math
Steven is moving to another city next weekend and wants to rent a moving truck. The rental rates for two companies in his area are shown below. Each company charges an initial fee for renting the truck, plus an additional amount per … 
Math
Homework Help: Math Posted by Blob on Sunday, November 13, 2016 at 1:23pm. Steven is moving to another city next weekend and wants to rent a moving truck. The rental rates for two companies in his area are shown below. Each company … 
Math
Steven is moving to another city next weekend and wants to rent a moving truck. The rental rates for two companies in his area are shown below. Each company charges an initial fee for renting the truck, plus an additional amount per … 
Math  algebra
Oceanside bike rental shop charges 14 dollars plus 9 dollars an hour for renting a bike. Joan paid 86 dollars to rent a bike. How many hours did she pay to have the bike checked out?