Answer:
13
Step-by-step explanation:
(7x3)-2(5+1)+4=13
1) 4
3) 6r^2
5) 10x
Hope this helped.
Answer:
About 71% of Earth's surface is covered in water.
Step-by-step explanation:
About 97% of Earth's water is salt water.
About 3% of Earth's water is fresh water.