We opened she section by moving that college students have money to spend, often

Question

We opened she section by moving that college students have money to spend, often courtesy of Mom and Dad. The bar graph shows discretionary spending on food and college coats by fill- and pat-time college students in the United States for four selected years from 2007 through 2013. The data in die graph can be modeled by the formula D = 1.2x^2 + 1.6(x + 40). where D represents discretionary spending among U.S college students in billions of dollars years after 2002 Use this formula to solve Exercises 147-148. According to the formula on the previous page, how much money did college students spend in 2013? Does the model underestimate or overestimate the amount of discretionary spending displayed by the bar graph? By how much? According to the formula on the previous page. how much money did college students spend in 2011? Does the model underestimate or overestimate the amount of discretionary spending displayed by the bar graph? By how much?

Explanation / Answer

Dear Student Thank you for using Chegg !! Given Data Modelled by graph = D = 1.2x^2 + 1.6 (x + 40) X : Years After 2007 D: In Billion Dollars 147) Disretionary spending in 2013 (x = 6) is D(2013) = 116.8 bn $ Discretionary spending in 2013 as per graph = 117 bn $ Thus proved that the model underextimate the discretionary spending by 0.2 bn $ 148) Disretionary spending in 2011 (x = 4) is D(2011) = 89.6 bn $ Discretionary spending in 2011 as per graph = 87 bn $ Thus proved that the model overestimate the discretionary spending by 2.6 bn $ Solution

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