Solve the System, If Possible, by Using Cramer's Rule $\begin{array} { l } - 9 x + 27 y + 9 z = 7 \\18 x + 45 y = 14 \\27 x + 9 y - 18 z = - 7\end{array}$

question 6

Multiple Choice

Solve the system, if possible, by using Cramer's rule. If Cramer's rule does not apply, solve the system by
using another method.
- $\begin{array} { l } - 9 x + 27 y + 9 z = 7 \\18 x + 45 y = 14 \\27 x + 9 y - 18 z = - 7\end{array}$

• A){ }
• B) \(\left\{ \left( - \frac { 7 } { 9 } , 0 , - \frac { 14 } { 9 } \right) \right\}\)
• C) \(\left\{ \left( \frac { 7 } { 9 } , 0 , \frac { 14 } { 9 } \right) \right\}\)
• D) \(\left\{ \left( - \frac { 7 } { 9 } + z , 0 , z \mid z \right. \right.\) is any real number \(\}\)

Assess the utility of psychology in everyday life.

Understand the concept of dualism and its critiques within contemporary psychology.

Describe the methods used by early psychologists to study the mind, such as introspection.

Explain the influence of environmental factors on behavior according to behaviorist view.

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Definitions:

Antitrust Laws

Regulations that promote competition by prohibiting monopolies, monopolistic practices, and other unfair business tactics that reduce consumer choice.

Price Leadership

A market strategy where a leading firm sets prices that other firms in the market follow.

Price Cuts

A reduction in the selling price of goods or services, usually to stimulate demand or compete more effectively.

Price War

Successive, competitive, and continued decreases in the prices charged by firms in an oligopolistic industry. At each stage of the price war, one firm lowers its price below its rivals’ price, hoping to increase its sales and revenues at its rivals’ expense. The war ends when the price decreases cease.