ISEE Upper Level Quantitative Reasoning Quiz
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ALGEBRAIC THINKING
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A small online clothing shop reviews its monthly results to decide how much inventory to order. Let R be monthly revenue from sales, and let E be monthly expenses, including shipping fees, advertising costs, website hosting, and the cost of purchasing new stock. The owner calculates profit using P=R−E. During months with a large marketing campaign, E may rise because advertising costs increase, but R may also rise if more customers place orders. During months with higher shipping rates, E can increase even if sales stay steady. The owner wants to understand what real-world events can change each variable.
What real-world factor can alter the variable R in this context?
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