1. Let z(x) = 3x-1 (K+7)x . m(x) = x - (K +5) and n(x) = Vat(4+K) Answer the following: 2 a. State whether z(x), m(x) and n(x) are polynomials or not. Justify your answer. (5 marks) b. Find the domain of the functions z (x), m(x) and n(x) (10 marks) c. Find (zom) (x) in the simplest form. (7 marks) d. Find (m * n 1) (x). (13 marks) e. Show if m(x) is one to one function. (6 marks) 2. For the quadratic function y = -6x2 + (K + 4)x + 9, find the following: a. The Axis of Symmetry of the quadratic equation. (4 marks) b. The Vertex point. (3 marks) c. The y-intercept point. (2 marks) d. The x-intercept points. (13 marks) e. Draw the function y (show all above elements in the graph). (5 marks) 3. Find the solution of the following system of liner inequalities by graphing: (K + 2y > 5x + 3y 14y 2 (K + 1)x+ 2 (20 marks) 4. Draw the graph of the linear equation: 3x + 4y - 7z = K + 8. (12 marks)