Acannonball is shot straight up into the air. the height of the cannonball at time t is represented by the function f(t)=−16t^2+40t+5 . what does the 5 represent? the maximum height of the cannonball the initial height of the cannonball the time when the cannonball hits the ground the initial velocity of the cannonball

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Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

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.