Decide Whether the Given Functions Are Inverses $$\begin{array} { l } \mathrm { f } = \{ ( 1,8 ) , ( 8 , - 3 ) , ( - 3 , - 9 ) \} \\g = \{ ( 8,1 ) , ( - 3,8 ) , ( - 9,1 ) \}\end{array}$$

question 385

Multiple Choice

Decide whether the given functions are inverses.
- $$\begin{array} { l } \mathrm { f } = \{ ( 1,8 ) , ( 8 , - 3 ) , ( - 3 , - 9 ) \} \\g = \{ ( 8,1 ) , ( - 3,8 ) , ( - 9,1 ) \}\end{array}$$

• A) Yes
• B) No

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Definitions:

Operating Leverage

A measure of how revenue growth translates into growth in operating income, indicating the proportional relationship between fixed and variable costs.

Contribution Margin

The difference between the sales revenue of a product and its variable costs, used to cover fixed costs and profit.

Pretax Net Income

The amount of income earned by a business before taxes have been deducted.

Absorption Costing

A method of product costing that includes all manufacturing costs, both variable and fixed, in the cost of a unit of a product.