Solve Using Cramer's Rule $\begin{array} { l } 8 a \quad + 3 c = 69 \\5 a + 9 b - 9 c = 30 \\5 a - 9 b \quad = - 33\end{array}$

question 24

Multiple Choice

Solve using Cramer's rule.
- $\begin{array} { l } 8 a \quad + 3 c = 69 \\5 a + 9 b - 9 c = 30 \\5 a - 9 b \quad = - 33\end{array}$

• A) \(( 7,7,7 )\)
• B) \(( 6 , - 7 , - 7 )\)
• C) \(( 6,7,7 )\)
• D) \(( 7,5,7 )\)

Analyze the relationship between marginal cost, marginal revenue, and the decision making of firms in the short run.

Grasp the implications of fixed, variable, and total costs on firm operations in the context of pure competition.

Describe the effect of market demand and supply shifts on a firm's equilibrium, profitability, and production decisions.

Identify and explain economic fallacies, particularly the fallacy of composition, in the context of personal savings and overall economic well-being.

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