please answer this revised to blur questions

s. Costs are if they have already been incurred and cannot be recovered. Mixed costs exhibit both and cost t. behaviours. u. Fixed costs that increase over a given range of activity exhibit cost behaviour. V. costs consist of direct material, direct labour, and indirect manufacturing support costs. W. A. is an item for which a separate measure of costs is desired. X. In situations where there is a capacity constraint, maximizing of the limited resource maximizes net revenue. y. A cost driver is always a cost with respect to a given cost object. z. Earning interest on accumulated interest is known as aa. If an investment generates a positive rate of return, its _value always exceeds its value. bb. A combination of relevant cost concepts, discounted cash flow analysis, and income tax effects is used to calculate net present value of purchases. cc. If a manufacturing firm is considering whether to outsource one component of its production process, are irrelevant. dd. Applying a higher discount rate to a future cash flow produces a present value. ee. Assuming a discount rate of the present value of an after-tax inflow of $100 received at the end of each of six years is $388.90. ff. Assuming a discount rate of 8% and an income tax rate of 30%, the present value of a pre-tax cash inflow of $100 received at the end of each of four years is gg. Assuming a discount rate of 4% and a 40% income tax rate, the present value of a single $100 pre-tax cash outflow paid at the end of 10 years is Can a resource that exhibits fixed cost behaviour be a cost driver? Give an example if so