How to distributive property to rewrite each expression?

What is the smallest integer n such that n\sqrt{2} is greater than 20

Suppose a store sells an average of 80 cases of soda per day. assume that each case contains 24 cans of soda and that the store is open 10 hours per day. find the average number of soda that the store sells per hour.

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2