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

question 175

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

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Definitions:

Positive Charge

An electrical charge with more protons than electrons, commonly found in cations or positive ions.

Negative Charge

A negative charge refers to the electric charge carried by particles with more electrons than protons, often resulting in an attractive force toward positively charged particles.

Electronegativity

The measure of an element’s ability to attract electrons.

Ionic Bond

Chemical bond formed because of the attraction of two oppositely charged ions, such as by the loaning of one or more electrons from one ion to another.