Dear Can you please help me out with this problem that I have with school? It's for my math. Ok, here is the problem. Which expression is equivalent 4(5x+3y)? 1) 9x + 3y 2) 9x + 7y 3) 20x + 7y 4) 20x + 12y Thank you!, Anonymous

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?