An upside-down image of Fluffy the cat is formed 16.8 cm from a makeup mirror when Fluffy is standing 1.50 m in front of the mirror. When Fluffy sits at a closer distance p from the same makeup mirror, an upright image that is twice the actual size is formed.

a) What is the focal length of the mirror?
b) What is the distance p?

Write your answer the following way:
a) focal length ____; Calculation: ____
b) distance ____ Calculation: ____