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MATH 155 Midterm: MATH 155 Colorado State Exam 1 Spring13

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turquoisegnu128

15 Feb 2019

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Instructions: the exam is closed book and closed notes. You may use an approved calculator, but be sure to show your work on each problem for full credit. Work that is crossed out or erased will not be graded. Turn in any scratch paper that you use during the exam. You will have one hour and 50 minutes to work on the exam. Number of chocolates at end of week t number of chocolates at end of week t + 1 ct. Find the half-life of the number of candies. 2: (15 points) two otters splash into their salt-water pool at the zoo, spilling 67 l of water each time they splash. Their pool usually holds 5900 l of water. Let st represent the concentration of salt in the pool after the otters have splashed t times, measured in grams/l. Remember that concentration is equal to the amount of salt (grams) divided by the volume (l).

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