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Hey, rosala.......save some of that ice cream for me.....!!!!!!   LOL!!! ........great pics!!!!

BTW........what festival is going on ????

Feel free to measage me, I would love to help :)

Try khanacademy.com. I am not so very good at math, but on that site you will find som very good stuff. 

$$\\\frac{(X^4+8X^3+12x^2-2x-9)}{(x+2)}\\\\
$Let the numerator be f(x)$\\
$find f(-2)\\
(-2)^4+8(-2)3+12(-2)^2-2(-2)-9\\
=16-64+48+4-9\\
=-29\\
\ne0 \\
$so (x+2) is not a factor of the numerator$\\
$so this cannot be simplified$$$

$$\\\frac{x}{1100+x}*1000000=200\\\\
$Divide both sides by 1000000$\\\\
\frac{x}{1100+x}=200/1000000\\\\
\frac{x}{1100+x}=0.0002\\\\
$multiply both sides by 1100+x NOTE x cannot =-1100$\\\\
x=0.0002(1100+x)\\\\
x=0.22+0.0002x\\\\
$Multiply both sides by 10000$\\\\
10000x=2200+2x\\\\
9998x=2200\\\\
x=\frac{2200}{9998}\\\\
x=\frac{1100}{4999}\\$$

It appears to me that the gross margin percentage when the selling price is $2.50 and the cost is $1.00 is

$2.50 / $1.00  =  2.5.

If the cost increases to $1.25, then the selling price should increase to $1.25 x 2.5  =  $3.125 before rounding.

(x) / (1100 + x) *1 000 000  = 200

First divide both sides by 1 000 000:

(x) / (1100 + x)  =  0.000 2

Multiply both sides by 1100 + x:

x  =  0.0002(1100 + x)

x  =  0.22 + 0.0002x

Subtract 0.0002x from both sides:

0.9998x  = 0.22

Divide both sides by 0.9998:

x  =  0.22 / 0.9998

This will become your answer. (It's a long decimal.)

4+4 is so easy the answer is 8

4+4 is so easy the answer is 8

For this you need to work hard , study with full concentration , and keep all your gadgets away!and if u need anymore help , we are here for you!

Thank you Rosala. You are very sweet:)

wow, im feeling so nice after reading all your wraps Melody!thats the reason i like them!i wish i could give u so many points but , unfortunately i can give only one , anyways one can still do many more things!

Hello Ninja , seems like now a days Ninjas have to work hard to keep their identity a secret!ah,so that keeps u busy!lol!anyways im fine and too busy not so well , but now holidays till monday so relaxing time!im sure your enjoying too!

yes MElody i have got my answer!thank you!

$${\mathtt{3.567}}{\mathtt{\,\times\,}}{{\mathtt{0.01}}}^{{\mathtt{2}}}{\mathtt{\,\small\textbf+\,}}{\mathtt{1}} = {\mathtt{1.000\: \!356\: \!7}}$$

Is that what you meant?

Wow , that was amazing CPhill!thanks for your answers CPhill  and geno , i must give u both some points!

Good to see you back Zegroes, and yeah a lot has happened in your absence , you know without you the forum isnt much enjoyable!anyways we hope to get that fun back as even im back now!

An example where this is true would be  ( i think this is right - other mathematicians are welcome to check)

$$\\examples\\
x=\sqrt y\\
y=x^3\\
y=-x(3-x)^2$$

Very fine Melody!

Thanks all.