Please help...

A convex mirror with a focal length of -82 cm is used as a side view mirror on a car. Another car is located 702 cm in front of the mirror. Calculate the magnification of the image. Enter your answer as a positive number for an upright image and a negative number for an inverted image. (Hint: First calculate the position of the image, then calculate the magnification.) Enter your answer to THREE decimal places.

An object is placed 27 cm from a concave mirror that has a focal length of 15 cm. Calculate the magnification of the image. If the object is upright, enter the magnification as a positive number. If the object is inverted enter the magnification as a negative number. Enter your answer to two decimal places. (Hint: First calculate the location of the image, then calculate the magnification.)