.
Let X be her investment.
Then, if you have necessary pre-requisites for this subject (which I hope you have), you can write an equation
10000 = .
From this equation
X = = use your calculator = 7244.18 dollars.
ANSWER. Carmen shoud invest $7244.18.
Solved.
--------------
For all details and explanations, look into these two lessons
- Compounded interest percentage problems
- Problems on discretely compound accounts
in this site, and learn the subject from there.
After reading these lessons, you will learn all necessary prerequisites and will tackle such problems
on your own without asking for help from outside.
Also, you have this free of charge online textbook in ALGEBRA-I in this site
- ALGEBRA-I - YOUR ONLINE TEXTBOOK.
The referred lessons are the part of this online textbook under the topic "Logarithms".
Save the link to this online textbook together with its description
Free of charge online textbook in ALGEBRA-I
https://www.algebra.com/algebra/homework/quadratic/lessons/ALGEBRA-I-YOUR-ONLINE-TEXTBOOK.lesson
to your archive and use it when it is needed.
Happy learning ( ! )