Solve the Inequality Using a Number Line and the Behavior $\in$

question 43

Multiple Choice

Solve the inequality using a number line and the behavior of the graph at each zero. Write your answer in interval notation. x⁴ + 9 < 10x²

• A) x \(\in\) (-?, -3) \(\cup\) (-1, 1) \(\cup\) (3, ?)
• B) x \(\in\) (-?, -3) \(\cup\) (-1, ?)
• C) x \(\in\) (-?, -1) \(\cup\) (3, ?)
• D) x \(\in\) (-3, -1) \(\cup\) (1, 3)

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Definitions:

Willingness-To-Pay

The maximum amount an individual is ready to spend to purchase a good or service or to avoid something undesirable.

Marginal Cost

The price required to create another unit of a good or service.

Advertising Elasticity of Demand

The responsiveness of the quantity demanded of a good to a change in the amount of advertising for that good.

Marginal Cost of Production

The change in total production costs that comes from making or producing one additional item.