How do i work pi on my texas instruments ti-30x iis calculator

SOURCE: Texas Instruments TI-30X IIS Calculator '+/-' sign

it is just a (-) symbol and it is beside the decimal point (.) button

SOURCE: I just bought a texas instruments TI-30X IIS

if you want to use your calc for this you would have to put it in as the operations to change the mixed to improper fraction i.e. input exactly as "((8*3)+6)*((3*7)+1)="  remember?  take denominator times whole number plus numerator and put over denominator to convert from mixed to improper... hope this helps

SOURCE: I am trying to find

There is a quick guide here which should help http://education.ti.com/downloads/guidebooks/scientific/30xii/30xiiqrg-eng.pdf
So you press 2nd Function , select 1-Var or 2-Var (for paired datat) then enter your data pressing down arrow after each and Enter to finish then press STAT / VAR to see the various variables

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SOURCE: how do i go from dms to decimal degrees with my ti-30x IIs

Press the key that is marked with a small circle, an apostrophe, and a double quotation mark. That is the DMS key. You can use it to convert from Decimal degress to DMS and back.