Harry liked to collect old movies. On 4 different days, he bought 2 movies. On 2 other days, he bought 3 movies each day. After that he sold 2 sets of 2 movies. He figured out how many he had total, and then he divided that total into 2 groups to put onto his shelves. How many did he put on each shelf? Choose the expression that best matches this situation. Answers:

A. [4 x 2 + 2 x 3 – 2 x 2 ÷ 2]

B. [4 x 2 + 2 x 3 – 2] x 2 ÷ 2

C. [(4 x 2) + (2 x 3) – (2 x 2)] ÷ 2

D. [(2 x 2) + (2 x 3) – (4 x 2)] ÷ 2

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?