A bacteria culture starts with 3000 bacteria. After 3 hours there are 48 000
bacteria present. What is the length of the doubling period?

Chip worked at the animal shelter for 6 hours each week for several weeks. he worked for a total of 42 hours. which of the following can be used to find the number of weeks chip worked at the animal shelter?

Is the point (0, 8) on the x-axis or y-axis? how do you know?

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?