Answer: C
Step-by-step explanation:
You can solve this by first multiplying both sides of the fraction by the conjugate of the denominator.
In this case, the conjugate is (8 - 2i).
So:

Simplify:

Simplify again, knowing that i^2 = -1

Then, divide both numbers in the numerator by 68 to get your answer.

Answer:
Step-by-step explanation:
1 billion = 10^9
10^9 people * (10 Liters)/person = 10^10 Liters
it's 5 days, if you need an explanation feel free
1,580 Hectoliters =
1,580,000 Deciliters
Huh? What do you mean I don't understand