(a) Q = 112.8(0.766)^t (b) 7.845
Work Step by Step
(a) Q = ab^t a = initial amount = 112.8 b = growth factor = decreasing = 1 - 0.234 (23.4%) = 0.776 => Q = 112.8(0.766)^t (b) Q = 112.8(0.766)^10 Q = 7.845
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