Answer the Question on the Basis of the Following Information

question 25

Multiple Choice

Answer the question on the basis of the following information. Assume that if the interest rate that businesses must pay to borrow funds were 20 percent, it would be unprofitable for businesses to invest in new machinery and equipment, so investment would be zero. But if the interest rate were 16 percent, businesses would find it profitable to invest $10 billion. If the interest rate were 12 percent, $20 billion would be invested. Assume that total investment continues to increase by $10 billion for each successive 4 percentage point decline in the interest rate. Refer to the information. Which of the following correctly expresses the indicated relationship as an equation?

• A) i = 20 - 4I.
• B) i = 20 - .4I.
• C) i = 24 - .4I.
• D) i = 20 - 10I.

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Definitions:

Peak-to-peak

A measure of the amplitude of a waveform, indicated by the difference between its maximum and minimum values.

RMS

Root Mean Square, a statistical measure of the magnitude of a varying quantity, used especially in electrical engineering to quantify the average voltage or current of alternating current (AC).

Full-wave

A method or device that converts the entire cycle of an AC waveform into a unidirectional flow of current.

Zero

A numeral representing the absence of any quantity or value; in mathematics and physics, it is considered a point of reference.