Tracey’s dog weighed 38.5 pounds. tracey weighed her dog and found that the dog lost 1/2 pound each month for three months. tracey used the expression 38.5 + 3(0.5) to find her dog’s weight at the end of the 3 months. what is the error in tracey’s expression? a. tracey’s dog weighed more in 3 months and the expression she wrote will result in a lower weight. . tracey should have added 3 and 0.5 instead of multiplying to find the dog’s new weight. c. tracey should have multiplied 3 and 38.5 and then subtracted 0.5 to find the dog’s new weight. d. tracey’s dog is losing weight so she should have used -0.5 instead of 0.5 in the expression.

Time (minutes) amount of water (gallons) practice 1. jin fills up a 510-gallon pool in the backyard for her children. she fills it with the garden hose at a rate of 17 gallons per minute. after it is filled, she lets it sit for 30 minutes in order to let the water temperature rise. the children then get in and have fun for an hour. the pool loses about 5 gallon of water each minute due to their splashing and playing. at the end of the hour, they tear the pool while getting out, which causes a leak the pool then begins to lose water at a rate of 2 gallons per minute. a. complete the table to show the amount of water in the pool after each minute. b. create a graph to model the problem situation. include when the pool will be empty. c. write a piecewise function that models this problem situation. explain your reasoning for each piece of the function. d. identify the x- and y-intercept. explain what they mean in terms of the problem situation, atamantha a cul 80 100 120 150 200 ning, inc