Answer
$$ \ 7.636$$
Work Step by Step
We plug in the given values. When t=0:
$$ 2.3$$
When t=4:
$$2.3e^{0.3\cdot \:4} \\ 7.636$$
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.