A certain radioactive isotope has a half-life of 15 days. If one is to make a table showing the half-life decay of a sample of this isotope from 32 grams to 1 gram; list the time (in days, starting with t = 0) in the first column and the mass remaining (in grams) in the second column, which type of sequence is used in the first column and which type of sequence is used in the second column?

Question

anonymous · Answer

32 gms               o days
16 gms     after 30 days
8 gms                45 days .... and so on

anonymous · Answer

I got 0,15,30,45,60,75 for the first column and i got 32,16,8,4,2,1 for the second one?

anonymous · Answer

my columns are just opposite ..

anonymous · Answer

correct..
for second column geometric and for the first  arithmetic...

anonymous · Answer

Got it! Thanks! :)

anonymous · Answer

yw