What is the contrapositive of the statement? "All equilateral triangles are isosceles."

A) If a triangle is equilateral, then it is isosceles.

B) If a triangle is not isosceles, then it is not equilateral.

C) If a triangle is isosceles, then it is equilateral.

D) If a triangles is not equilateral, then it is not isosceles

Problems and applications q5 four roommates are planning to spend the weekend in their dorm room watching old movies, and they are debating how many to watch. here is their willingness to pay for each film: willingness to pay (dollars) shen antonio dmitri jake first film 10 9 8 3 second film 8 7 6 2 third film 6 5 4 1 fourth film 4 3 2 0 fifth film 2 1 0 0 within the dorm room, the showing of a movie a public good. if it costs $12 to rent a movie, the roommates should rent movies in order to maximize the total surplus. suppose the roommates choose to rent the optimal number of movies you just indicated and then split the cost of renting equally. this means that each roommate will pay $ .