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

5km costs $4

if you take the intial charge of $2, you're paying $4 per 5km

hence 10km = 2 * 5km = 2*$4=$8+initial charge $2 = $10

15Km = 3*5km = 3*$4 = $12 + intial charge $2 = $14