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What are sources of light pollution and how do those affect astronomical observations
Variable Cost
Costs that change in proportion to the level of activity or production volume.
Relevant Range
Relevant Range is the span of activity volume in which the assumptions about fixed and variable cost behavior are valid.
Variable Cost
Costs that vary directly with the level of production or business activity.
Machine Hour
A measure of production time, specifically the number of hours a machine is operated in the manufacturing process.
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