Xác định y tại x = 0.46 từ dữ liệu x 0 0.0204 0.1055 0.241 0.582 0.712 0.981 y 0.285 1.04 1.79 2.63 4.39 4.99 5.27 Lưu ý. Các bài sau đây yêu cầu vẽ các điểm dữ liệu và hàm xấp xỉ.

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?