What number should be added to -21 to get the sum of -26

Find the unit rate for: 75% high-fiber chimp food to 25% high -protein chimp food.

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?

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?