Felipe is saving money for a class trip. he already has saved \$250$250dollar sign, 250 that he will put toward the trip. to save more money for the trip, felipe gets a job where each month he can add \$350$350dollar sign, 350 to his savings for the trip. let mmm be the number of months that felipe has worked at his new job. if felipe needs to save \$2700$2700dollar sign, 2700 to go on the trip, which equation best models the situation?

The system of equations graphed below has how many solutions? y = 2x + 2

Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0

An automobile assembly line operation has a scheduled mean completion time, μ, of 12 minutes. the standard deviation of completion times is 1.6 minutes. it is claimed that, under new management, the mean completion time has decreased. to test this claim, a random sample of 33 completion times under new management was taken. the sample had a mean of 11.2 minutes. assume that the population is normally distributed. can we support, at the 0.05 level of significance, the claim that the mean completion time has decreased under new management? assume that the standard deviation of completion times has not changed.