Posted by Dennis on Wednesday, May 12, 2010 at 7:55pm.
50 + .9 * 2 * 50 + .9^2*2*50 +.9^3*2*50 +.9^4 *2 * 50
= -50 +100 + 100 (.9^1 +.9^2 + .9^3 + .9^4)
-50 + geometric series g=100 n = 5, r = .9 in
Sum5 = 100(1-.9^4)/(1-.9)
= 100 (.3439)/.1 = 344
-50 + 344 = 294
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