I really need help with these practice questions pleasee.

1. Consider the function f(x) = 1245. (a) Find the domain of f(I). (b) Find the range of f(x). (c) Find all r and y intercepts of f(x), if they exist.2. Use the following grid to sketch a function with domain D = (oc, co) and range R = (1.1). Your function must. also satisfy: lim f(z)=1 lim f(z)=l :cm xbl You do not need to give a formula for your function to answer this question. \f(2, 2) a (2, 1) (1, 0.5) (1, 0) r (a) For this part, no explanation is needed. Use the graph to calculate the limits: lim f(I) 1+1+ lim f(I) * +1- (b) For this part, no explanation is needed. Use the graph to calculate the limits: lim f(x) z-+2+ lim f(x) Page 4(c) Carefully answer. with explanation, the following question: For what values T does the following limit exist? 33;. we) 4. Consider the following limit: lim 3'\" _ 13 t-v 2m 12 (a) Explain why direct substitution of x = 2 gives an invalid answer. (12-) Calculate the limit, carefully explaining each step of the calculation. Page 5