I think it'd be 1 because well all you are doing is multiplying 1, 8 times. That is only if you meant the I to be 1.
Answer:
The percentage of of the total energy production was generated by wind machines is 4.43%.
Step-by-step explanation:
Percentage is the proportion of an item in the whole.
The formula is:

It is provided that the wind machines in a country generated 181.3 billion kWh of electricity.
And the nation's total electricity production that year was 4,096 billion kWh.
Compute the percentage of of the total energy production was generated by wind machines as follows:

Thus, the percentage of of the total energy production was generated by wind machines is 4.43%.
Answer:
$126
Step-by-step explanation:
since they divided it evenly therefore everyone paid $42 you just times that by the amount of people. there is tom, mary and sara therefore 3. 42*3=126
6x-7+9x-8=90
15x=75
x=5
If you want more of an explanation just ask.