I really don't know what to do for this question! :( help?
1 answer:
The amount of money she should deposit is 6131.14 dollars.
<h3>How to find the compound interest ?</h3>The amount she should deposit can be found as follows:
where
- A = amount to deposit
- r = rate
- n = number of times
- t = time
- p = principal
Therefore,
p =
Hence,
p = $6,131.14
Therefore, she should deposit 6131.14 dollars.
learn more on compound interest here: brainly.com/question/13155407
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Answer:
Step-by-step explanation:
The given system is:
Since I prefer to use smaller numbers I'm going to divide both sides of the first equation by 3 and both sides of the equation equation by 6.
This gives me the system:
We could solve the first equation for and replace the second
with that.
Let's do that.
Subtract on both sides:
So we are replacing the second in the second equation with
which gives us:
Now recall the first equation we arranged so that was the subject. I'm referring to
.
We can now find given that
using the equation
.
Let's do that.
with
:
So the solution is (8,-1).
We can check this point by plugging it into both equations.
If both equations render true for that point, then we have verify the solution.
Let's try it.
with
:
is a true equation so the "solution" looks promising still.
with
:
is also true so the solution has been verified since both equations render true for that point.