Must show units and formula

An object is placed 20.0 cm from a converging lens with focal length 15 cm. A concave mirror with focal length 10 cm is located 75 cm to the right of the lens as shown in the figure. 75 cm- Object F F - 15 cm 20.0 cm 10 cm Note: The figure is not drawn to scale. a. (6) Determine the position of the final image relative to the mirror. b. (2) If the original object is 1cm in height, determine the height of the final image. c. (1) Is the final image real or virtual? Justify your answer. d. (1) Is the final image inverted or non-inverted? Justify your