Jennifer starts with a population of 100 amoebas that doubles in size every minute for a number of minutes, m. She writes the expression 100(2m) to find the number of amoeba after m minutes. Nathan starts with a population of 10 amoebas that increases 40% in size every minute for a number of minutes, m. He writes the expression (1+0.4)m to find the number of amoeba after m minutes.

Use the drop-down menus to explain what each part of Jennifer's and Nathan's expressions mean.

Jennifer's Expression: 100(2m)

m:

100:

2:

2m:

Nathan's Expression: (1+0.4)m

m:

1+0.4:

0.4: