The radioactive substance cesium-137 has a half-life of 30 years. The amount A(t) (in grams) of a sample of cesium-137 remaining after t years is given by the following exponential function.
A(t)=458(1/2 (is written as a fraction) t/3) also written as a fraction
Find the initial amount in the sample and the amount remaining after 50 years.
Round your answers to the nearest gram as necessary.