An airplane flying at an altitude of 7200 feet sights the angle of depression to a control tower to be 18 degrees. Find the horizontal distance the plane is from the control tower. (Disregard the height of the tower and round your answer to the nearest foot.)

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

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.

Identify the parent function that can be used to graph the function f(x)=3(x-9)2