If your question is asking for the height of the 3D figure when the volume is 18 cubic in. and its dimensions are 4 in., and 1/2 in., the height is 9 inches.
ANSWER
The new equation is:
EXPLANATION
The given parabola has equation,
This is the parent function.
When we reflect this parabola in the x-axis and then scaled vertically by a factor of 1/8.
The new equation becomes: