goldsmith finds that the demand for gold is governed by p(x) = -x² + kx, here x is in (troy) ounces, p is in thousands of pesos and k is a positive number. a. Give the domain of the price-demand function. b. Find the value of k such that the largest revenue is generated by selling 12 (troy) ounces. C. Using the value of k obtained from (b), what is the largest revenue?

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