Arthur is comparing the prices of two car rental companies. Company A charges $22 per day and an additional $5 as service charges. Company B charges $20 per day and an additional $16 as service charges. Part A: Write an equation to represent each company's total charges for renting a car for a certain number of days. For both equations (one for Company A and one for Company B), define the variable used. (4 points) Part B: Which company would charge less for renting a car for 9 days? Justify your answer. (3 points) Part C: How much money is saved by using the services of Company B instead of Company A to rent a car for 15 days? (3 points)

Part A:
Company A equation: 22d+5=c
Company B equation: 20d+16=c
"d" represents the number of days
"c" represents the total cost
Part B:
If you rented a car from Company B for 9 days it would be less than if you rented a car from Company A for 9 days. If you plug 9 in for "d" in both equations, Company A's total cost would be $203, while Company B's would be $196.
Part C:
You would save $19.
Hope this helps!