An initial sample of 463 g of a radioactive substance decays according to the function A(t) = 463e-0.044t where t is given in years. (a) How many grams of the substance will remain after 99 years?...

Extracted text: An initial sample of 463 g of a radioactive substance decays according to the function A(t) = 463e-0.044t where t is given in years. (a) How many grams of the substance will remain after 99 years? Round your answer to one decimal place. (b) What is the half-life of the substance? Round your answer to one decimal place.