Solve the Problem. -John Has Received Scores of 85, 88, 87, and 95

question 57

Multiple Choice

Solve the problem.
-John has received scores of 85, 88, 87, and 95 on her algebra tests. What is the minimum score he must receive on the fifth test to have an overall test score average of at least 90? (Hint: The average of a list of numbers is their
Sum divided by the number of numbers in the list.)

• A)95
• B)93
• C)94
• D)96

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Definitions:

Average Total Cost Curve

A graphical representation showing the average total cost of producing different quantities of output.

Purely Competitive Firm

A company that operates in a market where there are many buyers and sellers, the products are homogeneous, and there are no barriers to entering or exiting the market.

Economic Profit

The financial delta observed when a business's total outgoings, including every form of cost, are removed from its total intake.

MR = MC Rule

An economic principle stating that profit maximization occurs when a firm's marginal revenue equals its marginal cost.