Solve the all parts of given problem:
Problem: A cell phone 6.7 cm tall is 43 cm in front of your eye (diameter 2.5 cm).
Part I: Find the size of the image of the cell phone on your retina.
Height ________cm
Part II: The cell phone is now moved to a spot 55 cm from your eye. Is the image on the retina larger or smaller than the image in part (I)?
Part III: By what factor?
I need tutor help to solve the above problem and thanks in advance.