Tickets to a basketball game can be ordered online for a set price per ticket plus a $5.50 service fee. The total cost in dollars for ordering 5 tickets is $108.00. Which linear function represents c, the total cost, when x tickets are ordered? (A service fee is a single fee applied to the total, no matter the number of tickets purchased).

The $5.50 service fee is charged once, so it is the constant term in the cost function. After subtracting that fee, the five tickets cost $108.00 − $5.50 = $102.50, so each ticket costs $102.50 ÷ 5 = $20.50. Therefore, the total cost for x tickets is c(x) = 5.50 + 20.50x, which is choice A.

AI-written and checked against the verified answer.