Find a Mathematical Model Representing the Statement $( z = 128 \text { when } x = 4 \text { and } y = 8 . )$

question 21

Multiple Choice

Find a mathematical model representing the statement.(Determine the constant of proportionality. ) ​
Z varies jointly as x and y. $( z = 128 \text { when } x = 4 \text { and } y = 8 . )$ ​

• A) \(z = \frac { 4 y } { x }\)
• B) \(z = \frac { 4 } { x y }\)
• C) \(z = \frac { x y } { 4 }\)
• D) \(z = \frac { 4 x } { y }\)
• E) \(z = 4 x y\)

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Definitions:

Projected Selling Price

An estimated price at which a product or property is expected to be sold in the future.

Projected Dividend Payment

An estimate of the amount of money that will be paid to shareholders in the form of dividends in the future.

Expected Return

The anticipated amount of return on an investment, calculated based on probabilities of various outcomes, including gains or losses.

Indefinitely

Indefinitely means for an unspecified or unlimited duration, often indicating a period without a foreseeable end.