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

Question

Lance Burch

8 April, 07:30

+3

Answers (1)

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Gilberto Alvarado · Answer 1

W = - 0,414 t + 129,549

64 = - 0,424 t + 129,549 | - 129,549

-65,549 = - 0.414 t | / - 0,414

158,331 = t

After 158 minutes