Answered: Kelly has $24,500 to invest. She…

Intermediate Algebra

19th Edition

ISBN:9780998625720

Author:Lynn Marecek

Publisher:Lynn Marecek

Chapter4: Systems Of Linear Equations

Section4.2: Solve Applications With Systems Of Equations

Problem 4.32TI: Translate to a system of equations and then solve: Erin spent 30 minutes on the rowing machine and...

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Kelly has $24,500 to invest. She decides to divide it into the three accounts listed. At the end of the year, she has earned $1,300 in interest. If the amount invested in Stewart Oil was four times the amount of money invested in Thomas Games, how much did Kelly invest in each account?

a. Write down the system of equations describing this situation. Be sure to define the variables.

Company	Yield
Stewart Oil	4%
Thomas Games	5.5%
Kaitlyn Fragrances	6%

State the matrix for this system of equations.
Write down the reduced-row echelon form (i.e., the “answer matrix”) given by your calculator.
Explain in 1-2 sentences the meaning of these results.

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