Concept explainers
a.
The estimated percent increase in price of the gasoline from 2005 to 2010 using the given graph.
Given:
The graph,
Calculation:
Note that the price of gasoline in 2005 was about
The percent increase can be obtained by the ratio of the difference of the price and the price in 2005 as shown below
Thus, the precent increase is about
b.
The estimated percent increase in price of the gasoline from 2010 to 2015 using the given graph.
Given:
The graph,
Calculation:
Note that the price of gasoline in 2010 was about
The percent decrease can be obtained by the ratio of the difference of the price and the price in 2010 as shown below
Thus, the precent decrease is about
Chapter P Solutions
PRECALCULUS:GRAPHICAL,...-W/ACCESS
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