3. A $12,300 investment earns 4.75%/a in interest, compounded quarterly. a) Determine the value of the investment in 3 years. b) How long will it take the original investment to triple in value?

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A: From the given problem:   -2a6a+4   So, now multiplying.   -2a6a+4=-2a×6a+-2a×4=-12a2+-8a.....-×+=-;…

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A: 4x^2 - 11x - 45 4x^2 - 20x + 9x -45 4x(x-5) + 9(x-5)  (4x + 9) (x-5)

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A: Answer: y=-12x2

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A: topic - area of composite figure

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A: Explanation of the answer is as follows

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A: E(X)=0, E(X2)=2, E(X3)=0, E(X4)=5,Let Y=a+bX

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