Solve the problem.The regular price for a round-trip bus ticket to a certain city is $108. For a group rate the price is reduced by $3 per passenger on the bus. For example, one ticket costs $105, two tickets cost $102 each, three tickets cost $99 each, and so on. Write a formula that gives the revenue R from selling x tickets, and determine the number of tickets that should be sold to maximize the revenue.
A. R = x(54 + 3x); 9 tickets
B. R = x(60 - 3x); 10 tickets
C. R = x(54 - 3x); 9 tickets
D. R = x(48 + 3x); 8 tickets
Answer: C
Mathematics
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