Use a graphing calculator to graph f(x) = x3 + 4x² - 2x - 20 and find the following features of the graph. Round answers to the nearest hundredth, if necessary.
List the x-intercept of the graph.
X =
Find the intervals on which the function is increasing
x <
and x >
Find the interval on which the function is decreasing.

Four airplanes carrying a total of 400 passengersarrive at the detroit airport. the airplanes carry, respectively,50, 80, 110, and 160 passengers.a) one of the 400 passengers is selected uniformly at random.let x denote the number of passengers that were on theairplane carrying the randomly selected passenger. find var(x)for x as given in the problemb) one of the 4 airplane drivers is also selected uniformly atrandom. let y denote the number of passengers on the chosen driver’s airplane. find var(y) for y as given in the problem

The graph shown is the graph of which function?

What is the equation in slope-intercept form of the linear function represented by the table? y -18 -1 -8 4 2 912 o y=-2x-6 o y=-2x+6 o y=2x-6 o y = 2x+6