Consider the graph of a function f(x) below. You don't need to show your work to answer the following questions. 5 4 3 2+ + + + -X 5 6 1 2 3 4 (a) Find the x-value k at which the function has a removable discontinuity. (b) What value should be assigned to f(k) to make f continuous at x = k? (c) Find the x-value t at which the function has a left-continuous discontinuity.