Business Calculus Quiz
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An electric utility company designs a two-tier billing system for residential customers. The total monthly bill, B(x)B(x), is a function of the kilowatt-hours (kWh), xx, consumed.
The billing function is: B(x)={0.12xif 0≤x≤50065+0.15(x−500)if x>500B(x) = \begin{cases} 0.12x & \text{if } 0 \le x \le 500 \\ 65 + 0.15(x-500) & \text{if } x > 500 \end{cases} What is the financial consequence for a customer at the 500 kWh threshold?
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