What is the difference between marginal cost and marginal revenue? Marginal cost is the money earned from selling one more unit of a good. Man
producing one more unit of a good.
O Marginal cost is the money paid for producing one more unit of a good. Marg
selling one more unit of a good.
Marginal cost is the money a producer might make from one more unit. Marg
actually makes from one more unit.
O Marginal cost is the money a producer actually makes from one more unit. N
producer might make from one more unit.

What does the machinery in the hospital represent to the army major in the story? support your answer with textual evidence.

(1) fire extended humans’ geographical boundaries by allowing them to travel into regions that were previously too cold to explore. (2) it also kept predators away, allowing early humans to sleep securely. (3) fire, in fact, has been a significant factor in human development and progress in many ways. (4) other obvious benefits of fire are its uses in cooking and in hunting. (5) probably even more important, however, is that learning to control fire allowed people to change the very rhythm of their lives. (6) before fire, the human daily cycle coincided with the rising and setting of the sun. (7) with fire, though, humans gained time to think and talk about the day’s events and to prepare strategies for coping with tomorrow. the sentence that expresses the main idea is: (type the number of the sentence. then click “go.”)

Which word best describes the mood in this sentence? lucia was aglow as she bounced into the room with stories about her summer vacation.