A piece of charcoal is found to contain 39 of the element B that it originally had a When did the tree from which the charcoal came die Use 5500 years as the half life of the element B b Using a graphing utility graph the relation between the percentage of the element B remaining and time c Using INTERSECT determine the time that elapses until half of the the element B remains d Verify the answer found in part a a The tree died years ago Round to the nearest whole number as needed HEI