Catches 60 frogs and marks them with dye and returns them. next day catches 30 and 10 of them are marked with the previous dye. work out an estimation for the frogs in the pond.

Acertain company's main source of income is a mobile app. the company's annual profit (in millions of dollars) as a function of the app's price (in dollars) is modeled by p(x)=-2(x-3)(x-11)p(x)=−2(x−3)(x−11) which app prices will result in \$0$0 annual profit? enter the lower price first.