Answer :
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Below are the answers:
a. An = Ao • 2^(t/30)
b. An = 1500 • 2^(60*2/30) or An = 24000
c. 4000 = 1500 • 2^(t/30)
or 4000/1500 = 2^(t/30)
or ln(40/15) = (t/30) ln(2)
or t = 30* ln(8/3) / ln(2)
or t ~ 42.45 min
Below are the answers:
a. An = Ao • 2^(t/30)
b. An = 1500 • 2^(60*2/30) or An = 24000
c. 4000 = 1500 • 2^(t/30)
or 4000/1500 = 2^(t/30)
or ln(40/15) = (t/30) ln(2)
or t = 30* ln(8/3) / ln(2)
or t ~ 42.45 min