SOLUTION: The amount of radioactive substance​ present, in​ pounds, at time​ t, in​ days, is given by the formula y=60(2)^−0.2t. Find the number of pounds prese

Algebra ->  Equations -> SOLUTION: The amount of radioactive substance​ present, in​ pounds, at time​ t, in​ days, is given by the formula y=60(2)^−0.2t. Find the number of pounds prese      Log On


   

Question 1102658: The amount of radioactive substance​ present, in​ pounds, at time​ t, in​ days, is given by the formula y=60(2)^−0.2t. Find the number of pounds present in 30 days.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+y+=+60%2A2%5E%28+-.2t+%29+
+y+=+60%2A2%5E%28+-.2%2A30+%29+
+y+=+60%2A2%5E%28+-6+%29+
+y+=+60%2A.015625+
+y+=+.9375+
In 30 days there is .9375 pounds present