2) (9 points) For each sequence below, determine the limit as n - co. If a limit is infinite, write "oo" or "-co". You do not need to show your work, and there is no partial credit. Write only your final answer in the box provided. 57 100 - 2n a) Let an = Then lim an = n! + In(n) n-+0o 23n+3 + 67 b) Let On = 7 . 8n + 15n2. Then lim on = n-+0o 3n + 5n4 + 1 c) Let On = Then lim On = V3n8 + 6n3 - 10 n-+0o