the amount of microbes on a plate is given by: N(T) = 10T² - 40T + 200 , 1 T 20 where T is the temperature of the food given in Celsius NOT Fahrenheit. The food got left on the counter infront of a window on a hot summer day given by T (t) = 4t + 10 , 20 where t is in hrs (hours)

i) what is the composition of N(T(t))

ii) How long (hours) will the food need to be left out for the microbes number to reach 4160?