The function C(t) = 25.50t - 16.75 represents the cost of buying a certain number of tickets to the concert with a $16.75 coupon. The cost, C, is measured in dollars for t tickets. 1. Find the value of C(4). 2.What does C(4) represent in the context of the problem? 3.Is the value of C(6.5) reasonable to interpret in the context of the problem?