The EPA is the organization I don't know exactly what the scientists are called though. Hope I helped in some way.
You should round 519 to 520 and 124 to 120. Then you add them together and you would get 640, which is only three off of 643
C
Driving to Alaska can actually take less time than flying there.
Which story are you talking about, so I can help
<span>First let us see how many ways we can arrange four books. This can be done using a permutation: 4! = 4 x 3 x 2 x 1 = 24 ways Now we have to arrange them amongst the other 4 books, but lets consider them as package of 1. This will mean there are 5! ways to arrange the other 4 books. Combining the calculations gives us: 5! x 4! = 2880 different ways.</span>
