Twinkies on the shelf of a convenience store lose their fresh tastiness over time. We say that the taste quality is 1″ role=”presentation” data-asciimath=”1″>1 when the Twinkies are first put on the shelf at the store, and that the quality of tastiness declines according to the function Q(t)=.85t” role=” presentation” data-asciimath=”Q(t)=.85^t”>Q(t)=.85t (t” role=”presentation” data-asciimath=”t”>t in days). Determine when the taste quality will be one half of its original value.