SOLUTION: You are going to rent a car for a day. You have two choices, Golden Car Rental and Classic Car Rental. Golden Car Rental will rent you the car for $35 a day with unlimited mileage

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Question 1203794: You are going to rent a car for a day. You have two choices, Golden Car Rental and Classic Car Rental. Golden Car Rental will rent you the car for $35 a day with unlimited mileage while Classic Car Rental will rent you the car for $15 a day plus $.80 a mile. Write an equation for the cost of renting a car from Golden Car Rental. Write an equation for the cost of renting from Classic Car Rental
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Answers:
Golden Car Rental: y = 35
Classic Car Rental: y = 0.80x+15
where,
x = number of miles driven
y = total cost in dollars for 1 day only.


Explanation

Golden Car Rental charges $35 no matter how many miles have been driven.
So we write y = 35 to represent this. The variable x isn't present.
The cost (variable y) is always 35 here.

Classic Car Rental charges an up front fee of $15 for the day. Then an additional 80 cents (aka $0.80) per mile driven.
We start with 15 and add on 0.80x to get 15 + 0.80x which is the same as 0.80x+15
This is how we arrive at y = 0.80x + 15