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Einstein Did Not Use Flash Cards Mystery Cache

Hidden : 1/30/2013
Difficulty:
3 out of 5
Terrain:
1.5 out of 5

Size: Size:   regular (regular)

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Geocache Description:

This is a desktop puzzlecation that will have you reliving those algebra days of yore.  The above coordinates are all relative.  The theoretical physical location of the cache is at North 30 Degrees X Minutes and West 084 Degrees Y Minutes. 

You will use the functions below to solve for X and Y. Good luck! And if it helps you to know that young Al probably could not have solved this one himself being notoriously bad at math when he was young.
E=MC^2
D = day of Albert Einstein's birth
A = age in years Albert Einsten was when he died

Z = 3 × 66.88 + 184 ÷ 2
hint: pay attention to your order of operations; don't forget to Please Excuse My Dear Aunt Sally

f(x): 
((X-3)/2 - 7.12)1/2 + 12 = D

f(y): Y2 - Z = A


hint: input D, Z, and A and then reverse the equations to solve for X and Y


Once solved, provided you did your math correctly, you are hunting a medium sized tupperware container full of nerdy swag. FTF gets first dibs. Will you go for the calculator or the mechanical pencils??? Please rehide well to keep future Einstein-wanna-be muggles unawares.


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Congrats to Morganica for FTF!
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*by the way, this was my husband's idea, so you can blame him, and he doesn't even cache!

Additional Hints (Decrypt)

Fgngr bs orvat zhpu yrff guna nirentr urvtug

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
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N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)