Find the derivative of the function by using the rules of differentiation. 
Definitions:
Accounting Period
A specific period of time used by businesses for accounting purposes, often a fiscal year or quarter, to report financial performance.
Predetermined Overhead Rate
A rate used to allocate manufacturing overhead costs to products based on a predetermined formula.
Estimated Overhead Cost
Estimated overhead cost refers to the projected expenses related to manufacturing overhead or indirect costs that are expected to be incurred over a specified period.
Predetermined Overhead Rates
A rate calculated prior to the accounting period that is used to apply manufacturing overhead costs to products or job orders, based on an estimated amount of allocation base.
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