To evaluate: The range of miles for Plan B to save money.
The range is more than .
The offers for car rent are as follows:
Plan A: per day and 10 ȼ per mile.
Plan B: per day with free unlimited mileage.
Identify the variables:
It is required to find the range of miles for Plan B to save money. Let the number of miles be x.
Translate from words to algebra:
The number of miles be x.
Daily cost for plan A will be .
Daily cost for plan B will be .
Set up the model:
Plan B should cost less than plan A for Plan B to save money. That is,
Solve as follows:
Thus, the range of miles for Plan B to save money will be when . That is, when the range of miles is more than 200 miles.
Therefore, the range is more than .
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