Probability & Statistics
posted by Annie .
Charmaine is looking at the rental car prices for Get You There Rental Car Company. The cost is based on how many miles you plan to drive the rental car. Use the list of rental prices to answer the questions 1 5.
Miles Cost
200 $80
600 $120
1000 $160
1400 $200
1800 $320
1) Describe the relationship between the cost of the rental car and the miles.
2) Write a linear equation to represent the relationship between the cost and the miles.
3) Estimate the cost of driving the rental car for 1200 miles.
4) Predict the cost of driving the rental car for 2400 miles.
5) With $500, what is the maximum number of miles that you can drive the rental car?
These questions seem so simple to me but I got them all wrong... Can someone please help me?

1)This looks like a strong positive linear relationship between the cost of the rental car and the miles (as the mileage increases, so does the cost).
2)Linear equation:
predicted y = 36 + 0.14x
x = miles
y = cost
3)Substitute 1200 for x (miles) and solve for predicted y (cost).
4)Substitute 2400 for x (miles) and solve for predicted y (cost).
5)Substitute 500 for y (cost) and solve for x (miles).
I hope this will help get you started.
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