A 0.3 ml dose of a drug is injected into a patient steadily for 0.55 seconds. At the end of this time, the quantity, $Q$, of the drug in the body starts to decay exponentially at a continuous rate of 0.25 percent per second. Using formulas, express $Q$ as a continuous function of time, $t$, in seconds.

$Q(t) =$ if $0 \le t \le$
and $Q(t) =$ if $\le t \le \infty$
(If you write your function without breaking it up, use an endpoint of infinity and enter none for the remaining answer blanks.)