The marketing research department for a company that manufactures and sells computers established the following price- demand and cost functions. p(x)=2189-65x where p(x) is the wholesale price per computer in dollars at which x thousands of computers can be sold C(x)=4122+516x where C(x) is the cost in thousands dollars. Find the number of computer (in thousands) that will ensure the Maximum revenue : X= (Round to 3 d.p.) Answer: Choose...