8k-4k+4+7-k =
8k-4k-k+4+7 =
3k+11
B is correct
I just took it
Its 9-1 so that would be 8 idk if you are right just noticed and though it would help
This is a formula chart to help(i would’ve given you the answer but you didn’t give the sharp)
Answer: 
Step-by-step explanation:
Substitute the value of the radius of the Earth into the formula given in the problem, where r is the radius, to obtain the surface area of the Earth:

The problem says that the dry land forms 29.2% of the Earth’s surface, therefore, multiply the surface area by 
Threfore, the area of dry land is the following:
