Which of the following is equal to the limit lim In(sin(r) + 20), if it exists? (a) Does not exist (b) 3 (C) TT (d) too Consider the function f : R -> R defined by the following rule: 7, if r = 3, f(T) = r' + x - 12 if x # 3. T- 3 How many horizontal asymptotes does f have? (a) 2 (b) 0 (c) 1 (d) 3