The following table shows fuel consumption in billions of gallons of all vehicles in the U.S. for years since 1990. Year Fuel Use 130.8 3 137.3 6 147.4 161.4 12 168.7 15 174.8 18 170.8

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ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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The following table shows fuel consumption in billions of gallons of all vehicles in the U.S. for years
since 1990.
Year
Fuel Use
130.8
3
137.3
6
147.4
9
161.4
12
168.7
15
174.8
18
170.8
Let F(t) be the fuel consumption in billions of gallons in t years since 1990. A quadratic model for
the data is F(t) = - 0.114t? + 4.62t + 127.598.
175
170
165
160
155
150
145
140
135
130
6 9 12
15
125
Use the above scatter plot to decide whether the quadratic model fits the data well.
O The function is not a good model for the data
O The function is a good model for the data.
Estimate the fuel consumption in the U. S. in 2009.
billions of gallons.
Use the model to predict the year in which U.S. fuel consumption will peak.
n| 00
Transcribed Image Text:The following table shows fuel consumption in billions of gallons of all vehicles in the U.S. for years since 1990. Year Fuel Use 130.8 3 137.3 6 147.4 9 161.4 12 168.7 15 174.8 18 170.8 Let F(t) be the fuel consumption in billions of gallons in t years since 1990. A quadratic model for the data is F(t) = - 0.114t? + 4.62t + 127.598. 175 170 165 160 155 150 145 140 135 130 6 9 12 15 125 Use the above scatter plot to decide whether the quadratic model fits the data well. O The function is not a good model for the data O The function is a good model for the data. Estimate the fuel consumption in the U. S. in 2009. billions of gallons. Use the model to predict the year in which U.S. fuel consumption will peak. n| 00
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