You did not leave very much information (ie. Type of device...Apple / MAC, Android, Windows) but here are some generic things to try.
Delete your app from your device. When you reload the app, make sure it is the authentic FaceBook app made my Facebook and not a 3rd party.
If you are running...

"How does the answer 60,000=P(1.7410) come from the equation 60,000 = P(1+0.02)^28? I need to see the whole equation."
To answer this part of the question: The (1.7410)=(1+0.02)^28. It is simply restated.
To figure this out just take the 28th root of 1.7410....

You have tapped in to a great source of knowledge in this forum, of sorts. Feel free to ask your questions here. If it has been a while since you have taken any math, I would recommend you consider taking some lower level math classes before you jump in to anything too involved.

It helps to think about what you would have to do to a number to find the number plus tax. The price of the stereo is the unknown variable (x).
x(1+r)=P Where r is the tax rate and P is the price of the item after tax.
x(1+.06)=429.30 Equation filled in
x(1.06)=429.30 Add the...

In a square the length of each side is not the only thing that is equal. Everything must be equal for it to be a square, including the distance from one opposing corner to the other. Distance across is the same up and down and distance to one set of adjacent corners needs to be the same as it is...

Also keep in mind that on some questions like this the answer is no solution. Officially speaking an absolute value can not be a negative number, because like Daniel said it's the distance from zero and you can't go into zero. So if turning it into a positive number doesn't work then try "No...

There are many ways to make friends, being invisible is not usually one of them. Most of the people you see with friends have gone through the risks of rejection by putting themselves out there. Here are a few pointers you may find useful.
1. Don't be too over zealous, but say hello to people...