Solve for X and Y: 4x + 9y = 72

question 27

Multiple Choice

Solve for x and y: 4x + 9y = 72 6x + 15y = 90

• A)x = 45, y = -12
• B)x = -45, y = 12
• C)x = 45, y = 12
• D)x = -45, y = -12
• E)x = -45, y = -15

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Definitions:

Aggregate Supply

The total supply of goods and services that firms in an economy are willing and able to sell at a given overall price level in a given time period.

Aggregate Expenditure

Total spending on final goods and services in an economy during a given period, usually a year.

Net National Product

The total value of goods and services produced by a country's citizens, adjusted for depreciation; it reflects the nation's overall economic productivity after wear and tear on assets.

Profit-maximizing Condition

The state or point at which a business achieves the highest level of profit with the least amount of cost, often by equating marginal cost and marginal revenue.