Skill Practice 10 An artist shops online for tubes of watercolor paint. The cost is $16 for each 14-ml tube. a. Write a function representing the cost C(x) (in $) for x tubes of paint. b. There is a 5.5% sales tax on the cost of merchandise and a fixed cost of $4.99 for shipping. Write a function representing the total cost T(a) for a dollars spent in merchandise. c. Find (T• C)(x) and interpret the meaning in context. d. Evaluate (T• C)(18) and interpret the meaning in context. The composition of two functions creates a new function in which the output from

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