From school, Mandi biked 3.5 miles and then 6.1 miles towards home. Then she remembered she forgot to pick up her book at her friend's house. She rode 2.9 miles back towards school. Which equation uses the Associative Property to show equivalent ways to find her distance from school.

Solve the formula ax+ by = c for x.

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

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?