Please help me to figure out these questions with explanation especially 2c) thank you!

2. (6 marks total) Given the equation f(x) = (x +3)2 -16, answer the following: (a) (2 marks) What is the equation of the inverse of f (x)? Please box your final answer. (b) (2 marks) What are the domain and range of the inverse of f (x)? Please box your final answer. (c) (2 marks) Is the inverse a function? If not, how could the domain or range of the original function, f(x), be restricted so that the inverse is a function