Between 1960 and 2010, the size and shape of automobiles in the United States ha
ID: 3113543 • Letter: B
Question
Between 1960 and 2010, the size and shape of automobiles in the United States have changed almost annually. The fuel consumed by these vehicles has also changed. The following table describes the average fuel consumed per year per passenger car in gallons of gasoline. a. Determine the average rate of change, in gallons of fuel used per passenger car, from 1960 to 1970. b. Determine the average rate of change, in gallons of gas per year, from 1960 to 1990. c. Determine the average rate of change, in gallons of gas per year, from 1995 to 2005. d. Determine the average rate of change, in gallons of gas per year, between 1960 and 2010. e. What does the result in part d mean in this situation?Explanation / Answer
average rate of change from 1960 to 1970
(760 - 668 ) / 10 = 9.2 gallons / year
b) average rate of change from 1960 to 1990
(520 - 668 ) / 30 = -4.933 gallons / year
c) 1995 to 2005
(567 - 530 ) / 10 = 3.7 gallons / year
d) 1960 and 2010
( 453 - 668 ) / 50
= -4.3
e) the result in part d means that from 1960 to 2010 the gallons consumed per year by per passenger has decreased to 4.3 gallons per year
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