Help me please Liam’s mass is 102.1 kg
Choose the best approximation of Liam’s mass

A. 1 x 10^1
B. 1 x 10^2

Earth has an estimated mass of 5,972,000,000,000,000,000,000,000 kg
Choose the best approximation of earth’s mass

A. 6 x 10^21
B. 6 x 10^24

Approximately how many times as large is earth’s mass as liam’s mass?

A. 6 x 10^20
B. 6 x 10^21
C. 6 x 10^22