Perform the indicated operation. 
Definitions:
Price
The amount of money required to purchase a particular good or service.
Sales
The activity or business of selling products or services.
Costs
The costs associated with the creation of goods or services, covering materials, workforce, and indirect expenses.
Return on Investment
A measure used to evaluate the efficiency or profitability of an investment, calculated by dividing the profit gained from the investment by its cost.
Q49: Perform the indicated operation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8671/.jpg" alt="Perform
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Q72: Perform the indicated operation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8671/.jpg" alt="Perform
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