Find an approximation of the area of the region R under the graph of f by computing the Riemann sum of f corresponding to the partition of the interval into the subintervals shown in the accompanying figures. Use the midpoints of the subintervals as the representative points. 
Definitions:
Cost Formula
An equation used to determine the total cost of production, incorporating variable and fixed costs.
Wages and Salaries
Compensation paid to employees for their services, which can be based on time spent or tasks performed.
August
The eighth month of the year in the Gregorian calendar.
Cost Formula
An equation used to estimate costs, factoring in both fixed and variable components, typically for planning and budgeting purposes.
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