The marketing research department of a company that manufactures and sells memory chips for microcomputers established the following price-demand, revenue and cost functions: p(x)=75-3x R(x)=x(75-3x) C(x)=125+16x Where p(x) is the wholesale price in dollars at which x million chips can be sold, R(x) and C(x) are in millions of dollars. Both functions have a domain 1