The length of a bacterial cell is about 3 x 10−6 m, and the length of an amoeba cell is about 4.5 x 10−4 m. How many times smaller is the bacterial cell than the amoeba cell? Write the final answer in scientific notation with the correct number of significant
digits.

2 x 10^2
2 x 10^3
0.7 x 10^1
6.67 x 10^2