The cost to buy tickets online for the dance show Riverdance is $50 per ticket. (a) Write a function that represents the cost C (x) (in $) for x tickets to Riverdance. (b) There is a sales tax of 5.5% and a processing fee of $7 for a group of tickets. Write the total cost T (a) for a dollars spent on tickets. (c) Evaluate (T C)(x). (d) Find (T C) (8) and interpret its meaning in the context of this problem. Part: 0 / 4