64 is what percent of 200?
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If a(0,0,0) and b(2,2,2) are points in coordinate space, how many paths are there from a to b that move from one lattice point to another in the positive x-,y- or z- direction?

Me d is also an option but i couldn't get it in the picture

Solve 17= -13 - 8x and show your work.