1). (In this problem, give all of the answers correct to one decimal place.) A scientist is growing bacteria in her lab. She finds that the number of bacteria per microliter in her sample can be described by the following function: f ( t ) = 100 + 150 t^2 Here, t is measured in hours after the start of the experiment. What is the average growth rate of her sample between hours 12 and 17 of her experiment? Average growth rate : What is the growth rate of her sample at hour 17 of her experiment? Growth rate : At what rate is the growth rate changing at this time? Rate of change of growth rate