8000- 7000- 6000- 5000- 4000 - 6 9 12 15 18 21 Use the above scatter plot to decide which model better fits the data. linear quadratic none Let C(t) be the cost of tuition at CBU in dollars for t years since 1990. A quadratic model for the data is C(t) =| . Use three decimals in your answer. Estimate the tuition 2015. s Use the model to predict the year in which the tuition will be $15925.

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