Does this graph represent a function? Why or why not?

You will get 25 points an image of a rectangular prism is shown below: part a: a cross section of the prism is cut with a plane parallel to the base. what is the name of the shape created by the cross section? explain your answer. (5 points) part b: if a cross section of the prism is cut perpendicular to the base, what would be the shape of the resulting cross section? explain your answer. (5 points)

An objects motion is described by the equation d= 4sin (pi t) what will the height of the object be at 1.75 seconds?

Hi my sisters and brothers can tell me the answer because i don’t understand the question