Select and describe the figure that is generated by the rotation in three-dimensional space.
Rotate a semicircle around a line through the endpoints of the semicircle.
The figure is a (select)
a. circle
b. cone
c. cylender
d. sphere

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