Write the Word or Phrase That Best Completes Each Statement $\mathrm { D } ( \mathrm { h } ) = 4 \mathrm { e } ^ { - 0.35 \mathrm {~h} }$

Short Answer

Write the word or phrase that best completes each statement or answers the question.
-A cancer patient undergoing chemotherapy is injected with a particular drug. The function $\mathrm { D } ( \mathrm { h } ) = 4 \mathrm { e } ^ { - 0.35 \mathrm {~h} }$ gives the number of milligrams D of this drug that is in the patient's bloodstream hours after the drug has been administered. How many milligrams of the drug were injected? To the nearest milligram, how much of the drug will be present after 2 hours?