Answer
$4(1096.63315843)^t$
Work Step by Step
Recall the property $(a^m)^n=a^{mn}$, so the equation can be rewritten as
$$Q=4e^{7t}=4(e^7)^t ~~~~(1)$$
Evaluating $e^{7}$ yields $1096.63315843$.
Therefore, the equation (1) can be written as $Q=4(1096.63315843)^t$