Essay

Appliance Repair Pricing Inverse Model

You are working as a customer service coordinator at a local appliance repair center. The company uses the pricing function f(x)=5x3f(x) = 5x - 3 to calculate the total customer charge (in dollars), where xx represents the duration of the repair service in minutes beyond the standard call-out window. To help customers who call in with a specific budget, you need to explain how to reverse this pricing function. In your own words, outline the exact step-by-step algebraic procedure to derive the inverse function f1(x)f^{-1}(x) from the original function f(x)=5x3f(x) = 5x - 3.

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Updated 2026-06-05

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