Question 2. (8 pts) Evaluate the following limits. If the limit is infinite, specify the sign (too or -co). If a particular limit does not exist, and is not infinite, explain why. Show sufficient work to communicate your process to a peer who does not quite understand the problem, and state any theorems or special limits used. t2 - 9 (a) lim t--3 2+2 + 7t+ 3 (b) Let a be a constant. Compute lim + a2 y- too y+ a 2 (c) lim (1 t-+0 t2 + 2t ) (d) Let c > 0 and a constant. Evaluate lim C tovet - vc