Which of the Following Are Forms of Matter

question 8

Multiple Choice

Which of the following are forms of matter?
1) Electric current
2) Solids
3) Gases

• A) 1 and 2 only
• B) 1 and 3 only
• C) 2 and 3 only
• D) 1, 2, and 3

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Definitions:

Diminishing Marginal Returns

A principle stating that as more of a variable input is added to a fixed input, beyond some point, the additional output produced from the additional input will eventually start to decrease.

Marginal Cost Curve

A graphical representation showing how the cost of producing one additional unit of a good changes as production volume changes.

Average Variable Cost

The total variable costs of production divided by the number of units produced, measuring the cost per unit that varies with output level.

Marginal Costs

The increase in total cost that arises from an extra unit of production.