[Solved] Alcohols are more effective at inactivating enveloped viruses than naked viruses. Average-Fixed-Cost Curve: A graph that shows the average fixed costs of production at different levels of output. Fixed Cost: Costs that do not vary with the level of output or sales, such as rent, salaries, and insurance, remaining constant regardless of production volume. Fixed Inputs: Resources used in production that don't change in quantity as the level of production increases or decreases. Cost of Capital: The cost of capital represents the return rate that investors expect of a company to generate from its projects to be worth the risk of the investment.