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For items 11 – 15, find the sum of the terms of each of the following infinite geometric sequences Note: Your answer must be a value only no variable included. example: Find the sum in 9,3,1...the answer is only number which is "27/2" Reduce your answer to its lowest term
11) 1, 2/3, 4/9 ...
12) 12, 6, 3, ...
13) 1, 1/5, 1/25, ...
14) a1 = -4, r = 1/4
15) a1= 3 r=3/8