Answer: 9
Step-by-step explanation:
768.0%
16x8x6=768
Rounded to the nearest tenth 768.0%
1.98 x 10^-12 1.98
------------------ = ---------- x 10^-10
3.6 x 10^-2 3.6
=0.55 x 10^-10
=5.5 x 10^-11