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 102
2 x 103
0.7 x 101
6.67 x 102

Question

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 102
 2 x 103
 0.7 x 101
 6.67 x 102

Ferrari · Answer

A: 2 x 10^2

B: 2 x 10^3

C: 0.7 x 10^1

D: 6.67 x 10^2

Ferrari · Answer

Is the answer D? I don't think you added the "^" symbol, Lura.

Lura · Answer

Well..im trying to figure out how to explain it