8. State the degree and the leading coefficient of the given polynomial function: (4 marks) (a) f(x) = 12x4 - 6r + 2r + 4 (b) g(x) =1- 9. Find the inverse of each function: (4 marks) (a) g(x) = 4x - 1 (b) f(x) = V6-r 10. (a) Sketch a graph of the function g(x) = -2x2 + 5. (2 marks) (b) What are the domain and range of the function in (a)? (2 marks) (c) Is g(x) one-to-one? Justify your answer. (2 marks) 11. (a) Sketch a graph of the function (2 marks) y = f(x) = 3-2x if 0