Answer: Gadsden Purchase, 1853–1854. ... Gadsden's Purchase provided the land necessary for a southern transcontinental railroad and attempted to resolve conflicts that lingered after the Mexican-American War .
Explanation:
Answer:variable - interval
Explanation: In the this scenario, The humanities instructor is using a variable-interval schedule of reinforcement. The instructor used the word 'surprise' meaning the time and date of the test isn't fixed and the quizzes will come up at unpredictable time intervals. This kind of reinforcement results in a steady response rate as it keeps students on their toes simply due to the fact that they have no idea of when the quizzes are coming up.
The difference between marginal cost and marginal revenue is 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. Thus the correct answer is B.
<h3>What is marginal cost?</h3>
The difference in total production costs caused by producing or manufacturing one extra unit is known as the marginal cost of production.
In order to maximize production and overall operations, an organization must first decide when it can achieve economies of scale.
The sum of money spent to create one additional unit of a good is its marginal cost. Selling one additional unit of a good results in a profit known as marginal revenue.
Therefore, option B is the appropriate answer.
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Anvil is a heavy steel block that is used as a surface to hammer metal
