Use a Graphing Calculator and the Method of Matrix Inverses

question 227

Multiple Choice

Use a graphing calculator and the method of matrix inverses to Give five decimal places, if necessary.
-A bookstore is having a sale. All books included in the sale have a colored sticker on them to indicate the sale price. There are green stickers, red stickers, and orange stickers. Bob, Sue, and Fred each make purchases of books that are on sale. Each row of the table gives information about the numbers of book purchases and the total cost of the purchase (before taxes) .
$\begin{array}{c|c|c|c|r}\text { Person } & \text { Green } & \text { Red } & \text { Orange } & \text { Total Cost } \\\hline \text { Bob } & 1 & 2 & 2 & \$ 29.04 \\\text { Sue } & 1 & 3 & 2 & \$ 35.91 \\\text { Fred } & 1 & 2 & 3 & \$ 34.21\end{array}$

Use this information to set up a matrix equation of the form $\mathrm { AX } = \mathrm { B }$ , which can be solved to determ: the price for each type of sale book. Solve this matrix equation to find the price of a book with an ori sticker.
Use the fact that for $A = \left[ \begin{array} { l l l } 1 & 2 & 2 \\ 1 & 3 & 2 \\ 1 & 2 & 3 \end{array} \right] , A ^ { - 1 } = \left[ \begin{array} { r r r } 5 & - 2 & - 2 \\ - 1 & 1 & 0 \\ - 1 & 0 & 1 \end{array} \right]$ .

• A) \(\$ 5.17\)
• B) \(\$ 5.64\)
• C) \(\$ 4.81\)
• D) \(\$ 5.06\)

Compare and contrast International Financial Reporting Standards (IFRS) with Generally Accepted Accounting Principles (GAAP).

Understand the roles and objectives of financial auditing.

Recognize the need for and challenges of international accounting standards.

Familiarize with basic concepts and definitions in accounting including assets, liabilities, and owner's equity.

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Definitions:

Employer-Independent Contractor

A working relationship where the contractor provides services under a contract for a specific task, without being entitled to employee benefits or subject to the same control as an employee.

Independent Contractors

Individuals or entities hired to perform specific tasks or services, who maintain control over how their work is completed, rather than employees.

Authorizes

To give official permission or power to someone to do something.

Building Contractors

are professionals involved in the planning, leading, execution, supervision, and inspection of a building construction process.