Answer: 15.38%
Step-by-step explanation:
Y=a(x-h)²+k
y+4=1/2(x-7)²
y=1/2(x-7)²-4
(h,k) is the vertex
(7, -4)
first off, let's recall that a full-go-around on the circle is 2π.
so 13π is really 2π + 2π + 2π + 2π + 2π + 2π + π.
so it really goes around the circle 6 times, and then an extra +π, landing the angle at π, so csc(13π) is pretty much the same as csc(π).

2. 3 to the 2x -1. 2 times 1/2 is 1. 3 to the first power is 3. 3 minus 1 is 2.
See below for the explanation on how to determine the coordinates.
<h3>How to determine the coordinates?</h3>
The question is incomplete, and the missing parameters cannot be found.
So, I will give a general explanation on how to determine coordinates.
Assume that the start point of the buoy is
(x, y)
And the length of the buoy is k.
Depending on the position of the bouy on the coordinate plane, the endpoint can be any of the following coordinates (x - h, y), (x + h, y), (x, y + h) and (x, y - h)
Read more about coordinates at
brainly.com/question/17206319
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