Armando put $78 into a CD that pays 4.9% interest. According to the rule of
2 answers:
It will take 14.7 years for Armando's money to double.
Option C
<u>Explanation:</u>
The rule of 72 is generally used to estimate the number of years required to double the invested money at a given annual rate of return. And alternatively to find the number of years required to double the money at a given interest rate, we have to just divide the interest rate into 72.
Here, the interest rate is 4.9%. Therefore, it would be as follows
Rule 72 can be used to identify the following:
- Number of years it takes an investment to double,
- Number of years it takes debt to double,
- The interest rate must earn to double in a time frame,
- Number of times debt or money will double in a period of time.
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Using the rational root theorem, it is found that your friend is correct.
<h3>What is the rational root theorem?</h3>- It is a theorem that states that for a polynomial with integer coefficients, with q being the factors of the leading coefficient and p being the factors of the constant, every <u>possible rational root</u> is the format
.
In this problem:
- The leading coefficient is 1, hence it's only factor is
, thus guaranteeing that every possible rational zero is an integer, which means that your friend is correct.
To learn more about the rational root theorem, you can take a look at brainly.com/question/10937559
Answer:
this is your answer. thanks!!
