The number of country A forces in country B decreased to approximately 34,000 in 2014 from a high of about 100,000 in 2010. The amount of country A funding for country B security forces also decreased during this period. The function f(x)=-1.398x2+5.279x+5.517 can be used to estimate the amount of country A funding for country B security forces, in billions of dollars, x years after January 2009. In what year was the amount of country A funding for Country B security forces about 10.5 billion?The amount of country A funding for country B security forces was about 10.5 billion in the year _________ (round down to the nearest year)

Algebra for College Students
10th Edition
ISBN:9781285195780
Author:Jerome E. Kaufmann, Karen L. Schwitters
Publisher:Jerome E. Kaufmann, Karen L. Schwitters
Chapter8: Functions
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The number of country A forces in country B decreased to approximately 34,000 in 2014 from a high of about 100,000 in 2010. The amount of country A funding for country B security forces also decreased during this period. The function

f(x)=-1.398x2+5.279x+5.517

can be used to estimate the amount of country A funding for country B security forces, in billions of dollars, x years after January 2009. In what year was the amount of country A funding for Country B security forces about 10.5 billion?

The amount of country A funding for country B security forces was about 10.5 billion in the year _________ (round down to the nearest year)

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