A ride in a taxicab costs $1.25 for the first mile and $1.15 for each additional mile. Which of the following could be used to computed the total cost y of a ride which was x miles?

Let x = the total miles of the ride. Thus, x - 1 = the additional miles of the ride. The correct equation takes $1.25 and adds it to $1.15 times the number of additional miles, x - 1. Translating, this becomes y (the total cost) = 1.25 + 1.15(x - 1), which is the similar equation as y = 1.15(x - 1) + 1.25.