Travis took a taxicab from his office to a meeting on the other side of town. The cab ride cost $8.50 which includes a $2.00 tip. In deciman form, how far is it from his office to the meeting?

You do not have enough information to solve the problem:

The charge was $6.50 without the tip. You need to know the rate that the taxicab charges in order to solve this problem.

For example if the taxicab charged $1.30 per mile then the answer would be $6.50/$1.30 per mile = 5 miles