Thanks to Smaller and More Fuel-Efficient Models, American Carmakers Have

Multiple Choice

Thanks to smaller and more fuel-efficient models, American carmakers have doubled their average fuel economy over a 13-year period, from 1974 to 1987. The graph depicted in the figure gives the average fuel consumption in miles per gallon (mpg) of domestic-built cars over the period under consideration ( corresponds to the beginning of 1974) . Use the trapezoidal rule to estimate the average fuel consumption of the domestic car built during this period. Round the result to the nearest hundredth. (Hint: Approximate the integral .)

A) 21.71 mpg
B) 20.68 mpg
C) 19.26 mpg
D) 21.27 mpg