i really need help with these practice questions .

3 2. Consider the function f(I) = 2 + 4 (a) Find the domain of f(x). (b) Find the range of f(x). (c) Find the x and y intercepts of y = f(x), if they exist.Sketch the function f(x) given below. Label the point where the pieces of the pieceswise function meet. f(x) = Jatl x53 r >35. Consider the polynomial p(x) = -3r- + 6r. (a) Write the degree of the polynomial, no explanation is needed. (b) Use the leading coefficient to determine the behaviour of p(x) for large values of r (c) Find the zeroes of the polynomial, explain your method for solving the polynomial. (d) Explain whether the polynomial p(x) is even, odd, or neither.Consider the function f (x) = r - 9 (a) Find the domain of f(x). (b) Find the range of f(r). (c) Find all x and y intercepts of f(x), if they exist.4. Consider the functions f(x) = vx and g(x) = x +9. (a) Find the domain of (fog)(x). (b) Find the domain of (go f)(I)