Juanita wants to buy 254.7 pounds of mulch for her garden. The mulch usually costs $6.99 for 50 pounds. Juanita found a sale that gives her a price of $5.99 for 50 pounds if she buys more than 200 pounds. Which equation shows the first step to finding her savings if she takes advantage of the sale? x = 254.7 divided by 50
x = 254.7 times 50
x = 254.7 times 5.99
x = 254.7 divided by 5.99

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.