out of 40 people which are either tall or fat or both, 22 are tall and 23 are fat. if i select one random person out of the 40 what is the probability he is both tall and fat

Aschool typically sells 500 yearbooks each year for 50 dollars each. the economic calls does a project and discovers that they can sell 100 more yearbooks for every $5 decrease in price. the revenue for yearbook sales is equal to the number of yearbooks sold times the price of the yearbook. let x represent the number of $5 decrease in price. if the expression that represents the revenue is written in the form r(x)=(500+ax)(50-bx). to maximize profit, what price should the school charge for the yearbooks? what is the possible maximum revenue? if the school attains the maximum revenue, how many yearbooks will they sell?

Write and solve a real word problem that involves determining distance on a coordinate plane

Find the solution of each of the following.