Consider the following. {^{3x+1, x lessthan or equal to -1}

^{x^2-3, x>-1}

^{A.) Find the Critical Numbers of f. (Enter answers as a comma-separated list.)}

^{B.) Find the open intervals on which the function is increasing or decreasing. (Enter your answers using interval notation.)}

^{C.) Apply the First Derivative Test to identify the relative extremum. (Relative Max and Relative Min) (x,y)}