3. Consider f(1:} = (:r 1}2{3:B + 2)? (a) 1What is the domain of f(l')? What is the range of f(:r)? (Hint: Notice the function involves two squared expressions.) (b) Sketch a rough graph of fr) using long-run behavior and intercepts. (c) Explain how you know that x) is NOT a one-to-one function over its domain. De- scribe an interval over which 1'] is one-to-one. (d) Does your interval from part (c) cover the entire range state in (a)? If not, nd another interval over which x) is one-to-one that does cover the entire range stated in (a)