Sergio has decided to weigh his reference books. His largest encyclopedia weighs 7. 49 pounds, and his largest dictionary weighs 3. 91 kilograms. If one pound is equal to 0. 4535924 kilograms, which book is heavier, and how many more kilograms does it weigh than the other? a. The encyclopedia weighs 1. 61 kg more than the dictionary. B. The encyclopedia weighs 0. 87 kg more than the dictionary. C. The dictionary weighs 1. 13 kg more than the encyclopedia. D. The dictionary weighs 0. 51 kg more than the encyclopedia.

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?