Started out of the back of her house, Tamika runs a business making jewelry. Now that the business has grown, she incurs a fixed cost of $5,000 per month for rent, insurance, and other expenses. It costs Tamika $1.30 to make each piece of jewelry. Write a function C(x), where C is the monthly cost of running the jewelry business and x is the number of pieces of jewelry made. Find C(20,000) and explain what the result means.

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