Dave borrowed​ $7100 from his uncle with simple interest of 8​% and eventually repaid ​$8236 ​(principal and​ interest). What was the time period of the​ loan?   The time period of the loan was______ ​year(s).   ​(Type an integer or a​ decimal.)

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A: Use product rule on x^2*y and 2x^3yThen apply the power rul

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A: Combine them using LCD