The graph shows how Social Security trust fund assets are expected to change and suggests that a
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The graph shows how Social Security trust fund assets are expected to change and suggests that a quadratic function would be a good fit to the data. The data are approximated by the function
In the model, x = 10 represents 2010, x = 15 represents 2015, and so on, and ƒ(x) is in billions of dollars.
(a) How could we have predicted that this quadratic model would have a negative coefficient for x2, based only on the graph shown?
(b) Algebraically determine the vertex of the graph. Express the x-coordinate to the nearest hundredth and the y-coordinate to the nearest whole number. Interpret the answer as it applies to this application.
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a Based on the graph shown we can observe that the function decreases and then increases forming a c...View the full answer
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Related Book For 
Intermediate Algebra
ISBN: 9780134895987
13th Edition
Authors: Margaret Lial, John Hornsby, Terry McGinnis
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