[-I4 Points] LARCALC11 6.2.056.MI. ASK YOUR TEACHER The number of bacteria in a culture is increasing according to the law of exponential growth. There are 145 bacteria in the culture alter 2 hours and 445 bacteria alter 4 hours. (a) Find the initial population. (Round your answer to the nearest whole number.) bacteria (b) Write an exponential growth model for the bacteria population. Let t represent the time in hours. y= (c) Use the model to determine the number of bacteria aer 8 hours. (Round your answer to the nearest whole number.) bacteria (d) Aer how many hours will the bacteria count be 30,000? (Round your answer to two decimal places.) hr DETAILS PREVIOUS ANSWERS LARCALC11 5.3.064. PRACTICE ANO' calcP 5. [0/1 Points] MY NOTES ASK YOUR TEACHER + Operatic Use the function f and the given real number a to find (f-)'(a). (Hint: See Example 5. If an answer does not exist, enter DNE.) Function X Symbol f(x) = x3 + 7x- 1, a=-9 Relation (F - 1) ' ( - 9 ) = 1 X Sets Vectors Need Help? Read It Trig Greek Help Submit