The number N of bacteria in a refrigerated food is given by:
N(T)=25T^2-50T+300, 2(less then or equal to)T(less then or equal to)20
Where T is the temperature of the foodin degrees celsius. When the food is removed from refrigeration, the temperature of the food is given by:
T(t)=2t+1, 0(less then or equal to)t(less then or equal to)9
Where t is the time in hours. Find the time when the bacteria count reaches 750.
Ok so im thinking you use equation 2 and make it equal to 750 and then workout t. is it that simple or u need to defferintiate equation 1 and make it equal to equation 2s answear????? so confused, i know its probably easy its just that i havent done application questions in ages.