Bank 02.03 C1: The total cost b(x), in dollars, for renting a bowling lane for x hours * is shown: b(x) = 3x + 15. What does b(3) represent? The number of dollars it costs to rent the bowling lane for 3 hours. The number of games you can bowl in 3 hours. The number of games you can bowl for a cost of $3. The number of hours the bowling lane can be rented for a cost of $3.