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(Solved): Suppose the quantity (in grams) of a radioactive substance present at time t is Q(t)=32430.7t ...
Suppose the quantity (in grams) of a radioactive substance present at time t is Q(t)=3243−0.7t, where t is measured in months.
a. How much will be present in 7 months?
b. How long will it take to reduce the substance to 4 grams?