Find the Variation Equation for the Variation Statement $z$ Varies Directly As

question 85

Multiple Choice

Find the variation equation for the variation statement.
- $z$ varies directly as $x$ and inversely as $y ; z = 5$ when $x = 45$ and $y = 45$

• A) \(z = \frac { 5 } { x y }\)
• B) \(z = \frac { 5 x } { y }\)
• C) \(z = \frac { x } { 5 y }\)
• D) \(z = 5 x y\)

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Definitions:

Nominal Interest Rate

The interest rate before adjustments for inflation. It is the rate quoted on loans and deposits.

Inflation Rate

The Inflation Rate is a measure of the rate at which the general level of prices for goods and services is rising, and subsequently, purchasing power is falling, usually expressed as a percentage.

Shoeleather Costs

The increased costs of transactions caused by inflation, including the time and effort spent to avoid holding cash that is rapidly losing value.

Menu Costs

The expenses companies incur while changing their prices, including costs related to reprinting menus, updating marketing materials, and altering price tags.