A law office orders business stationery. The cost is $17.05 per box. (a) Write a function that represents the cost C (x) (in $) for x boxes of stationery. (b) There is a 6% sales tax on the cost of merchandise and $9.58 for shipping. Write a function that represents the total cost T (a) for a dollars spent i merchandise and shipping. (c) Find (TC)(x). (d) Find (TC)(5) and interpret its meaning in the context of this problem.