Answer
(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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