Amy studies two plant cells in biology class.

one cell measures 8×10−6 meter across. the other cell measures 4×10−5 meter across.

question 1
part a

amy compares the sizes of the cells using these steps:

1. divide the whole-number factors: 8÷4=2.

2. divide the powers of 10: 10−5÷10−6=101=10.

3. multiply the products: 2×10=20.

she concludes that the larger cell is 20 times the size of the smaller cell.

which correctly describes amy’s conclusion and process?