The domain of the following relation R{(3, -2), (1, 2), (-1, -4), (-1, 2)} is (1 point) O {-4, -2, 2}
O {-4, -2, 2, 2}
O {-1, -1, 1, 3}
O {-1, 1,3}

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet

Sasha drank 8 bottles of water everyday for a week. how many bottles of water did she drink in total?

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.