What is the difference between marginal cost and marginal revenue?

a. marginal cost is the money earned from selling one more unit of a good. marginal revenue is the money paid for producing one more unit of a good.
b. marginal cost is the money paid for producing one more unit of a good. marginal revenue is the money earned from selling one more unit of a good.
c. marginal cost is the money a producer might make from one more unit. marginal revenue is the money a producer actually makes from one more unit.
d. marginal cost is the money a producer actually makes from one more unit. marginal revenue is the money a producer might make from one more unit.

Starting at age 30, you deposit $2000 a year into an ira account for retirement. treat the yearly deposits into the account as a continuous income stream. if money in the account earns 7%, compounded continuously, how much will be in the account 35 years later, when you retire at age 65? how much of the final amount is interest?

> > objectives define federalism and explain why the framers adopted a federal system instead of a unitary system. categorize powers delegated to and denied to the national government, and powers reserved for and denied to the states, and the difference between exclusive and concurrent powers.

Which of the following businesses is most likely to disrupt an existing industry? a. closer connex developed an earphone that receives emails and text messages and converts them to voice messages. the first models had poor reception, but they rapidly improved over time. b. mega technologies reconfigured the components used in its touchscreen tablets to create a new type of wearable device for use in restaurants and other service industries. c. particle inc. developed a teleportation technology that can transport physical materials instantaneously across great distances. d. altrea added advanced camera technology to its premium line of smartphones so that they would take the highest-quality photos of all phones on the market.