The phone bill for Laurel Accounting consists of both fixed and variable costs.Refer to the four month data below and apply the high-low method to answer the question.(Round your calculation to two decimal places. ) 
What is the variable cost per minute?
Definitions:
Inventory Obsolescence
Refers to the reduction in the value of inventory items due to them becoming outdated, no longer useful, or unsalable.
Opportunity Cost
The expense associated with choosing not to pursue the second-best option during decision-making.
Insurance Premium
The amount of money an individual or business must pay for an insurance policy, securing protection or coverage against specific risks.
Credit Period
The length of time allowed by a creditor for a borrower to make payment on a merchandise or loan without incurring interest or penalties.
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