Suppose that the total profit in hundreds of dollars from selling x\displaystyle {x}x items is given by P(x)=−9x2+15x−33\displaystyle {P}{\left({x}\right)}=-{9}{x}^{{2}}+{15}{x}-{33}P(x)=−9x2+15x−33 . Find the marginal profit at x=7\displaystyle {x}={7}x=7 .
Submit Try a similar question