Let -x+b, ifz -4(and a b) (a) For what value(s) of b is f continuous at -4? Answer: b = (b) For what value(s) of b does f have a removable discontinuity at -4? Answer: b= H (c) For what value(s) of b does f have an infinite discontinuity at -4? Answer: b = (d) For what value(s) of b does f have a jump discontinuity at -4? Write your answer in interval notation using "U" for union. For example, (-1, 1) U (2, 3] is the set of all real numbers a so that -1 < x < 1 or 2 < x3. Answer: b is in the set