3. (04.01 MC) If y − 1 = 4x, which of the following sets represents possible inputs and outputs of the function, represented as ordered pairs? (1 point) {(1, 4), (2, 8), (3, 12)} {(4, 1), (8, 2), (12, 3)} {(0, 1), (1, 5), (2, 9)} {(1, 0), (5, 1), (9, 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?