<h2>
Thus, the required "option 4)" is correct.</h2>
Step-by-step explanation:
We find,

To find, the binomial expansion of of
= ?
We know that,

∴ 
Here, n = 7, x = x and y = 2y
= 


∴ The binomial expansion of of

Thus, the required "option 4)" is correct.
Answer:
the second one would be more effective because $800*12 will cost a lot more than $650+2 months penalty if u leave
The answer is A. Here's how you get it. Law of cosines here looks like this:
17^2 = 22^2 + 30^3 - [2(22)(30)cosA]; which simplifies to 289=484+900-1320(cosA). Doing that math gives you 289 = 1384 - 1320(cosA), and -1095 = -1320(cosA). Divide both sides by -1320 to get
.829545 = cos A. Now use the inverse cosine on your calculator to get the missing angle measure.
X=-1/3 y+4
y=-3x+12
hope this helps!