Question 30 5 pts A piece of bone from an organism is found to contain 30% of the carbon - 14 that is contained when it was living. (Hint: the half - life of carbon - 14 is 5730 years). For part a - round to 2 decimal places and type the answer in scientific notation - do not use spaces. For part b - round the final answer to the nearest whole number, and use a comma if appropriate. a) What is the rate of decay of carbon - 14? years ago b) How long ago was the organism alive? L