Solve. -Libby's 4 Quiz Scores in Her Math Class Are 86

question 129

Multiple Choice

Solve.
-Libby's 4 quiz scores in her math class are 86, 91, 81, and 86. What score does she need to obtain on her next quiz to average an 85? Round to the nearest whole number if necessary.

• A)84
• B)82
• C)67
• D)81

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Definitions:

Optimal Output

The level of production that maximizes a firm's profit or minimizes its cost under given conditions.

Market Demand

The total quantity of a product or service that all consumers in a market are willing and able to purchase at various prices.

Marginal Cost

The cost of producing an additional unit of output, highlighting the concept of increasing or decreasing returns.

Equilibrium Price

The price at which the quantity of a good or service demanded by consumers equals the quantity supplied by producers, leading to market stability.