Select the best answer. a farmer is conducting an experiment to determine which variety of apple tree, fuji or gala, will produce more fruit in his orchard. the orchard is divided into 20 equally sized square plots. he has 10 trees of each variety and randomly assigns each tree to a separate plot in the orchard. what are the experimental unit(s) in this study?
(a) the trees
(b) the plots
(c) the apples
(d) the farmer
(e) the orchard

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

Which of the points a(6, 2), b(0, 0), c(3, 2), d(−12, 8), e(−12, −8) belong to the graph of direct variation y= 2/3 x?

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?