(b ) lim f(x ) xact (c) lim f(x) X - C (d) f(c) 0 Xotherwise exist, enter DNE.) Use the graph of y = f(x) and the given c-value to find the following, whenever they exist. (If the limit is infinite, enter 'co' or '-co', as appropriate. If the limit does not C= -10 15 y = f(x) 10 5 -20 X -15 - 10 -5 -51 (a) lim f(x) X- C