1 point (s) possible manufactures and sells memory chips for microcomputers established the following price-demand and rewenue functions p(x)=105-3x R(x)=x(x)=x(105-3x) Price-demand function Revenue function where p(x) is the wholesale price in dollars at which x milion chips can be sold, and R(x) is in millions of dollars. Both functions have domain 1<=x<=21