Answer: 9% decrease in population
Step-by-step explanation:
trust
3k²+11k+6, or (k+3)(3k+2), which is the 3rd one. :)
Twice.
Once at the spring equinox, once at the fall equinox.
If you want rough hours, it would be 6. Round the 10:52 to 11, and the 4:53 to 5, its 6 hours. You want specifics though, it would be exactly 6 hours and 1 minute.
The required number is 6C4 = 15.