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This is compounding interest formula. A=500(1+.04/24)24*6

But, why are you dividing the interest (4%) by 24? What does 24 represent?

I'm not sure about the first part....but....for the second....as long as each different value of the independent variable - usually denoted as x - produces only one value for the dependent variable - usually denoted as y - we have a function.....this passes what is known as the "vertical line" test

Example:

y = x^2    is a function because each value of x only produces only one y

But.....

x = y^2   is not .......note  y = -2 and y = 2 produce the same x.......thus, one value of x - namely, 4 - is associated with two different y values........

Good thinking CPhill, I never liked those methods so trial and error was just my opinion. Your method worked to be shorter and more effective. Props to you.

CPhill: Did you make a mistake here?

Here's another way.....

208  =  104 * 2 =  52 * 4  = 26* 8

So.......that  must be the right thing........

thank you CPhill. I Know this because we just covered this subject in english 

Sorry, HSC......didn't mean to steal your thunder......HAHAHA!!!

Solve the following system:
{n+54 = p
0.05 n+0.01 p = 2.7

In the first equation, look to solve for p:
{n+54 = p
0.05 n+0.01 p = 2.7

n+54 = p is equivalent to p = n+54:
{p = n+54
0.05 n+0.01 p = 2.7

Substitute p = n+54 into the second equation:
{p = n+54
0.05 n+0.01 (n+54) = 2.7

0.05 n+0.01 (n+54) = 0.05 n+(0.01 n+0.54) = 0.06 n+0.54:
{p = n+54
0.06 n+0.54 = 2.7

In the second equation, look to solve for n:
{p = n+54
0.06 n+0.54 = 2.7

0.06 n+0.54 = (3 n)/50+27/50 and 2.7 = 27/10:
(3 n)/50+27/50 = 27/10

Subtract 27/50 from both sides:
{p = n+54
(3 n)/50 = 54/25

Multiply both sides by 50/3:
{p = n+54
n = 36

Substitute n = 36 into the first equation:
{p = 90
n = 36

Collect results in alphabetical order:
Answer: |  n = 36                  and                p=90
 

You beat me to the punch CPhill. haha

Katie-Leigh's reasoning is totally correct......

same here

Just type this:

500(1+.04/24)^(24*6)

Grammar or GUM

I would say D. Just sounds right. Wait is this literature?! Oh whatever...

Very nice, HSC.......!!!!!

The easiest way to go about this is TRIAL AND ERROR, so I'll do so.

Our numbers are 8, 9, 19, 22, 25, 26

Now multiplying any of the two digit numbers in the same combo is a no go, you'll get over 208 and multiplying 8 by 9 gets you 72 so we know those are out.

- Lets try 8 and 19... They equal 152, closer but not what we need

- How about 8 and 22...?  Drats, 176.

- Okay I'm sure 8 and 25 can do it... Nope... we got 200.

- I give up... just go with 8 and 26... What? You mean to tell me we got it? 8 times 26 is 208? Oh, well okay then the combination is 8 and 26.

Hope some humor helped you with this. c:

I agree with CPhill. it's D because when there's three or more you use the ist when there's two you use er. and you don't need to use it doubly so most finest wouldn't work either

@CPhill can u help me with this 

okay thank you I do know systems I just didn't know the formula for this problem thank you that helps

IT MOST DEFINITELY IS NOT C

D is the correct choice.....

This is a question on a test, so please just tell me which one IS correct?

Because it makes the most sence

...i agree but...it depends on if youre trying to make it seem like shes the best one or not

Why?