Your boss would like you to estimate the fixed and variable components of a particular cost. Actual data for this cost over four recent periods appear below. 
Using the least-squares regression method, what is the cost formula for this cost?
Definitions:
Trout
A common name for several species of freshwater fish belonging to the salmon family, often valued as food and game.
Reds
Refers colloquially to red wine or to teams wearing red uniforms; context could specify further meaning.
Post Hoc
Short for 'post hoc ergo propter hoc,' a logical fallacy implying that since one event followed another, it must be caused by it.
Fallacy
A logical fallacy that undermines the validity of an argument.
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