Answer the Question on the Basis of the Following Information

question 109

Multiple Choice

Answer the question on the basis of the following information.In 1985,the exchange rate between the U.S.dollar and the Japanese yen was $1 = 262 yen;in 2003,the rate was $1 = 110 yen. Refer to the given information.Which one of the following might be a plausible explanation for the change in the dollar-yen exchange rate from 1985 to 2003?

• A) Japan exported much more to the United States during this period than it imported from the United States.
• B) Japan greatly increased its purchases of military equipment from the United States during this period.
• C) Japan's economy grew far faster than the U.S.economy during this period.
• D) Japan's government devalued the yen during this period.

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Definitions:

Inverse Function

A function that reverses the operation of a given function, such that the composition of the two yields the original input.

Function

A framework involving a set of inputs and a roster of potential outputs, with the stipulation that each input is corresponded with only one output.

Composition

The combining of distinct parts or elements to form a whole, especially in mathematics where functions are combined.

Function

A mathematical relationship where each input has a single output, often expressed as f(x).