The range of a function is the set of y-coordinates of all the points int he graph of the function.
Look at the graph. The vertex is point (2, -3).
The graph does not go lower than that point.
The lowest y-coordinate is -3.
The graph goes up forever on both sides until infinity.
The range is all numbers greater than or equal to -3.
(-2)^4 = (-2) (-2) (-2) (-2) = 16
so n = 16
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Answer:
The variable u divided by the variable x.
The formula for finding the volume of a sphere is 
If 40mm is the radius of the sphere, the volume will be about
mm.