Eva measures the mass of her pet lizard each month. She wrote this equation to describe her lizard's growth.
y = 0.6x + 4
In the equation, x represents the independent variable and y represents the dependent variable. Which of the following can be the quantities that x and y represent?
A
x = the time in months, and y = the mass in grams
C
B
x = the time in months, and y = the type of lizard
x = the mass in grams, and y = the time in months
x = the type of lizard, and y = the mass in grams

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 $ .