What is the conflict of this story? A)
David wants to celebrate his success but does not
want to hurt Jonathan's feelings.
B)
David wants to make the baseball team, but he
performs poorly in front of the coach.
©).
David does well at baseball tryouts, but his father is
unhappy with his performance.
D)
David thinks he performed well at tryouts but learns
that he did not make the team.

The biologist has a second culture to examine. she knows that the population of the culture doubles every 15 minutes. after 1 hour and 15 minutes, her assistant found that 80,000 bacteria were present. a) what was the size of the initial population? b) predict the size of the culture at t=3 hours. what was the size of the population at 40 minutes? explain and justify your answers. c) create a graph of the population as a function of time. find an equation that can be used to predict the size of the population at any time t. d) examine the rate at which the bacteria culture is growing. how fast is the culture growing after 1 hour? after 1.5 hours? after 2 hours? use a time interval of h = 0.01 hours to estimate these rates. interpret these rates in terms of the context of the problem situation. how do these three rates compare?