The number of bacteria in a refrigerated food is given by, for푁(푡) = 20푡 2 − 20푡 + 120 , where is the temperature of the food in Celsius. At what temperature will the− 2 ≤ 푡 ≤ 14 푡 number of bacteria be the lowest? Justify your reasoning. Use the coordinate plane below to help you confirm your answer.