____ Backflow Is a Reversal of Normal Flow in a System

question 15

Multiple Choice

____ backflow is a reversal of normal flow in a system caused by a negative pressure (vacuum) in the potable water supply.

• A)Gravity
• B)Back-siphonage
• C)Back-pressure
• D)none of the above

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Definitions:

Monotonic Preferences

Preferences that are consistent in their direction; that is, if a consumer prefers bundle A to B, they will not prefer B to A under any circumstances.

Marginal Rate

Often used in context as marginal rate of substitution or marginal rate of transformation, indicating the rate at which one good can be substituted for another or one output can be exchanged for another in production without altering the overall level.

Substitution

The economic principle describing how consumers replace more expensive items with less costly alternatives.

Indifference Curves

Graphs showing different bundles of goods between which a consumer is indifferent, highlighting preferences.