If you want to graph the function, it is quite easy:
y=a(x-h)2-k . . . you can plot the vertex (h,k); the 'a' tells you how wide or narrow the u-shape is, and whether it opens up or down.
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Square :)
It is preferable ...
The only difference is a phase shift of pi/2 radians (90 degrees), so there is no aprticular advantage in either.
score of 92
1 foot 6 inches would be a better estimate.