Task: Question Answering
Input (English): Problem: the toll t, in dollars, for a truck using a certain bridge is given by the formula t = 0.50 + 0.50 ( x − 2 ), where x is the number of axles on the truck. what is the toll for an 18 - wheel truck that has 2 wheels on its front axle and 4 wheels on each of its other axles ?
Options: a. $ 2.00, b. $ 3.00, c. $ 3.50, d. $ 4.00, e. $ 5.00
Output (English): a