Answer:
they put 8 and 8
Step-by-step explanation:
1.0 to the power of 10 - 50 so 1 to the power of 40
-6 - (-9)
1) Remove parentheses
-6 + 9
2) Simplify
3
See attachted image for rules of positive and negative integers.
Source: YourDictionary
It will have 16 times more coverage than cell tower A.