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9.) America's dependency on foreign oil has always been a "hot" political topic, with the amount of imported oil fluctuating over the years due to political climate, public awareness, the economy, and other factors. The amount of crude oil imported can be approximated by the function given, where A(t) represents the number of barrels imported in year t (in billions), with 1980 corresponding to year t = 0. 0.047t2 – 0.38t + 1.9 0 11 0.133t + 0.685 a) Use A(t) to estimate the number of barrels imported in the years 1983, 1989, 1995, and 2005. b) What was the minimum number of barrels imported between 1980 and 1988?

9.) America's dependency on foreign oil has always been a "hot" political topic, with the amount of imported oil fluctuating over the years due to political climate, public awareness, the economy, and other factors. The amount of crude oil imported can be approximated by the function given, where A(t) represents the number of barrels imported in year t (in billions), with 1980 corresponding to year t = 0. 0.047t2 – 0.38t + 1.9 0 11 0.133t + 0.685 a) Use A(t) to estimate the number of barrels imported in the years 1983, 1989, 1995, and 2005. b) What was the minimum number of barrels imported between 1980 and 1988?

College Algebra
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter2: Functions
Section: Chapter Questions
Problem 30P: In this problem you are asked to find a function that models in real life situation and then use the...
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9.) America's dependency on foreign oil has always been a "hot" political topic, with the amount of imported oil fluctuating over the years due to political climate, public awareness, the economy, and other factors. The amount of crude oil imported can be approximated by the function given, where A(t) represents the number of barrels imported in year t (in billions), with 1980 corresponding to year t = 0. 0.047t2 – 0.38t + 1.9 0<t<8 A(t) : -0.075t² + 1.495t – 5.265 8<t< 11 t > 11 0.133t + 0.685 a) Use A(t) to estimate the number of barrels imported in the years 1983, 1989, 1995, and 2005. b) What was the minimum number of barrels imported between 1980 and 1988?
Transcribed Image Text:9.) America's dependency on foreign oil has always been a "hot" political topic, with the amount of imported oil fluctuating over the years due to political climate, public awareness, the economy, and other factors. The amount of crude oil imported can be approximated by the function given, where A(t) represents the number of barrels imported in year t (in billions), with 1980 corresponding to year t = 0. 0.047t2 – 0.38t + 1.9 0<t<8 A(t) : -0.075t² + 1.495t – 5.265 8<t< 11 t > 11 0.133t + 0.685 a) Use A(t) to estimate the number of barrels imported in the years 1983, 1989, 1995, and 2005. b) What was the minimum number of barrels imported between 1980 and 1988?
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