The radioactive substance cesium-137 has a half-life of 30 years. The amount A(t) (in grams) of a sample of cinium-137 remaining after t years is given by the following exponential function. A(t) = 725 * (1/2) ^ (t/30)Find the initial amount in the sample and the amount remaining after 50 yearsRound your answers to the nearest gram as necessary.