Main street and washington avenue meet at a right angle. a large park begins at this corner. joe's school lies at the opposite corner of the park. usually joe walks 1.2 miles along main street and then 0.9 miles up washington avenue to get to school. today he walked a straight path across the park and returned home along the same path. what is the difference in distance between the two round trips?

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?