Question 1036573
I have to edit the function, for +0.5t^2 will show a continuously increasing function.
{{{graph(300,200,-5,10,90,120,0.5x^2+3x+98.6)}}}
{{{graph(300,200,-5,5,0,120,-0.5x^2+3x+98.6)}}}
The maximum function shows a temperature of 103.1F at 3 days.  This is consistent with the vertex's being -3/-1 or 3.