Sorry, there isn't one
Yes. To access it, press [Math], scroll over to PRB [>] [>] [>] [>], and select option [4].
No. I believe TI83+ and TI84 do use an operating system.
Yes. The TI83 has several applications that can be downloaded onto the TI83, mainly those made by Texas Instruments. Also, you can write your own software.
12 percent plus 20 percent equals 32 percent. To add one percentage to another simply add the numbers together and keep the percentage sign.
plus sign (+), minus (-), number (#), decimal point for decimals and money, percent (%), dollar sign ($), equal (=)
There are online graphing calculators. However, as of writing, there is no emulated TI83 that runs within your browser. On the other hand, if you have a Ti83, it is possible to copy its ROM to run an emulated TI83 on your desktop via one of many emulators.
Percent sign (%) is read as percent.
No, it really depends on the college. Some colleges don't allow any calculators for their math classes. Everything that can be done on a TI83 can be done with the human brain, so some professors make tests with easier computations so that you don't have to use a TI83
there is no percent button... just use the decimal button and then move the decimal two places down
The answer is: 98.73482 or 9,873.482%
Press "ALPHA", then press "."
Press MODE and select NORMAL at the top. (You may notice that SCI was selected for scientific notation.)