The cost that is recoverable is $30 per hour that was agreed as the hour to be spent in learning the soft ware. The sunk cost it's an irrecoverable cost that does influence decision making. When the agreed leaning cost of $30 per hr for 45hr of $1350 is deducted from the asking price of $6000 we have the $4650
The answer is "experiment or experimental research".
Experimental research refers to the kind of quantitative research that deliberately controls at least one factors to figure out which factors casually affect different factors. Now many firms and companies are actively using this type of quantitative research on Facebook.
