Question

A bacteria population increases every hour. At 12 P.M.,there are 5 cells. At 1 P.M. there are 10 cells. At 2 P.M. there are 20 cells. At 3 P.M there are 40 cells. If this pattern continues, how many cells will there be at 7 P.M? Explain

Answer 1

Time Amount of Cells

12 P.M. 5 cells

1 P.M. 10 cells

2 P.M. 20 cells

3 P.M. 40 cells

4 P.M. 80 cells

5 P.M. 160 cells

6 P.M. 320 cells

7 P.M. 640 cells

At 7 P.M. there were 640 cells

Answer 2

640 cells

Explanation:

This means every hour it doubles. After 7 hours, it will be multiplied by 128, and 128*5 is 640 cells.