Ann took a taxi home from the airport. the taxi fare was
$
2
.
1
0
$2.10dollar sign, 2, point, 10 per mile, and she gave the driver a tip of
$
5
$5dollar sign, 5. ann paid a total of
$
4
9
.
1
0
$49.10dollar sign, 49, point, 10.

I assume what is being asked in this problem is the number of miles that the trip took. First, we determine that the total fare is equal to the amount paid for the trip alone plus the tip. If we let x be the number of miles then the equation for this problem is,
                             49.10 = 2.1x + 5
The value of x from the equation is 21.
Therefore, the total distance covered in this trip is equal to 21 miles.