Forgetting. In an economics class, studentswere given a final exam at the end of the

Chapter 5, Problem 30

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Forgetting. In an economics class, studentswere given a final exam at the end of the course.Then they were retested with an equivalent testat subsequent time intervals. Their scores aftertime x, in months, are listed in the table below. a) Use a graphing calculator to fit a logarithmicfunction y = a + b ln x to the data.b) Use the function to predict test scores after 8,10, 24, and 36 months.c) After how long will the test scores fall below 82%?

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