Use the values x = -2, 0, 3 to prove your solution to the equation 5 + x - 14 = x - 7 . In your final answer, include all of your calculations.

The cost of a taxi ride includes an initial charge of $2.00. if a 5km ride cost $6.00 and a 10km ride cost $10.00, determine the cost of a 15km ride.