Answer:
2 and 1 because they are directly next to a variable
Answer:
B.
Step-by-step explanation:
None of the other answers make sense, so just by process of elimination it should be B.
Good luck on your assignment!
Since we are given x in terms of y, the most efficient way to solve it would be to substitute in the
for x in the second equation. So, we then have:

So, now that we have our y, we can find x. We can actually use either equation, top or bottom, to find x, but to be efficient we should use the top one since we have x in terms of y, so:

So, our ordered pair is (2,-6).
The answer is <span>B.2520
</span>
For permutation P we will use:
nPr = n!/(n-r)!
7P5 = ?
n = 7
r = 5
7P5 = 7!/(7-5)!
= (7 * 6 * 5 * 4 * 3 * 2 * 1)/2!
= 5040/(1 * 2)
= 5040/2
= 2520