The graph represents the rate of two machines that fill water barrels. one machine has already filled 30 water barrels before the faster machine starts. according to the graph, the two machines will have filled a certain number of water barrels at about the same time. what is that number of barrels? a) 45 barrels b) 50 barrels c) 80 barrels eliminate d) 90 barrels

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?