Does anyone know how to answer this question?

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9 To manufacture x thousand computer chips requires fixed expenditures of $352 plus $42 per thousand chips. Receipts from the sale of x thousand chips amount to $130 per thousand. a. Find the linear expenditure function, E(x) b. Find the linear receipt function, R(x). c. For profit to be made, receipts must be greater than expenditures. How many chips must be sold to produce a profit