Answer
$363$
Work Step by Step
If $N=P(1-e^{-0.15d})$, then if $P=1000$, $d=3$, $N(3)=1000(1-e^{-0.15\cdot3})=362.37\approx363$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.