K = kilo = thousand 74K = 74,000
yes
Use Q = Q0e-kt, where Q0 is the initial amount of uranium and k is the factor of proportionality. Since we know that Q = 1/2 Q0 when t = 74, we have 1/2Q0 = Q0e-k x 74; 1/2 = e -74k; In 1/2 = -74k; k = 0.009366853
I paid $70.00 for mine at an auction Oct 07. My serial is 74k it's in good condition but may need a new clip. Mitch
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