Ann took a taxi home from the airport. The taxi fare was $2.10 per mile, and she gave the driver a t

Set up the cost function C(m) where m is the number of miles:
C(m) = Mileage Rate x m + Tip
2.10m + 5 = 49.10

Type 2.10m + 5 = 49.10 into the search engine, and we get m = 21.

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