Use the Gauss-Jordan Method to Solve the System of Equations $$\begin{array} { l } 2 x - 2 y + 3 z = 3 \\x + 2 y - z = 7 \\2 y + z = 1\end{array}$$

question 443

Multiple Choice

Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, let the last
variable be the arbitrary variable.
- $$\begin{array} { l } 2 x - 2 y + 3 z = 3 \\x + 2 y - z = 7 \\2 y + z = 1\end{array}$$

• A) \(\varnothing\)
• B) \(\{ ( - 4,1,15 ) \}\)
• C) \(\{ ( 10,8 , - 5 ) \}\)
• D) \(\{ ( 4,1 , - 1 ) \}\)

Calculate the present value of annuities, both ordinary and growing, using different rates of return.

Understand the concept of financial saving goals and how to calculate future value towards achieving those goals.

Apply the concept of the time value of money to various financial planning and investment situations.

Estimate the future value of annuities and single cash flows using appropriate interest rates.

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