What would the answers be to these two questions?

The concentration of a medicine in the bloodstream after t hours of taking it is given by the equation C (t) - 0.1t ( 1 + 3 ) 2 where t is the elapsed time in hours measured from 11:00 am. At what time does the concentration stop increasing? 3 hours 2 am 0 hours 2 pm The concentration of a medicine in the bloodstream after t hours of taking it is given by the equation: C(t) = 0.1t ( 1 + 3 ) 2 where t is the elapsed time in hours measured from 11:00 am. What is the maximum concentration? 0.1 0.0083 0.008