Which of these statements correctly describes the function y=9x - 7?
A. it is a linear function, and it’s graph is a straight line.
B. it is a linear function, but it’s graph is not a straight line. C. it is not a linear function, but it’s graph is a straight line. D. it is not a linear function, and it’s graph is not a straight line

Why is causation so much more difficult to prove than correlation?

Which of the following is equal to the rational expression when x is not equal to -2 or -6?

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 $ .