ANSWER

EXPLANATION
From the mnemonics SOH-CAH-TOA.
We want to find the cosine of y
CAH means cosine ratio involves adjacent over the hypotenuse.

From the right by triangle, the side ajacent to angle y is 64 units and the hypotenuse is 80 units.


B, im hundred percent sure its right
To compare the two fractions you could graph the two fractions on a number line and compare which one is greater, and which is less.
Or you could make the two fractions have the same denominator and then compare the numerator. If the numerator for one is greater than the other, than that fraction is greater.
Hope this helps :)
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Are you kidding me, bro? lol
276-115=131
131 divided by 276 = 0.47
0.47% increase