I really need help with these practice questions please .

1. Consider the function f (I) = 1245. (a) Find the domain of f(x). (b) Find the range of f(x). (c) Find all a and y intercepts of f(x), if they exist.2. Use the following grid to sketch 3 function with domain I) = (2, 2) and range R = [3, 00). You do not. need to give a formula for your function to answer this question. Page 2 3. Consider the function x) shown in the graph below. (a) For this part, no explanation is needed. Use the graph to calculate the limits: rl-itrg'i' ft\") tl-itrlrll f(.1') (b) For this part, no explanation is needed. Use the graph to calculate the limits: sl-iI-nl'F 19(2) 13.11; f(:|'.'} (c) Carefully answer, with explanation, the following question: For what values T does the following limit not exist? 3'33 Km} 4. Consider the following limit: l a: 2 alrl-rmZ x2 2:." (5) Explain why direct substitution of a: = 2 gives an invalid answer. (b) Calculate the limit, carefully explaining each step of the calculation