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Given informationThe amount A (in g) remaining of a radioactive substance after time t (in years) is found by solving the equation dA + 0.039A dt = 0.if there are 250 grams of the substance initiallyTo find:-solve for A as a function of t.Step 2dA+0.039 Adt=0dA=-0.039 Adt(dA)/(A)=-0.0 ... See the full answer