4*200+4*70+4*5, or you can just use a calculator.
180-46=
134
134/2= 67
So the measurement of W and X is 67!
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1) 1ml % 6 marbles = about 0.17ml so the volume per marble is 0.17ml 2) 10-(0.17x4) = 9.32 so that is the original volume 3) then 9.32 + (0.17 x 13) = 11.53ml 4) it is linear because for every marble placed inside the cylinder the volume increases by about 0.17ml the slope means amount of marbles placed vs. volume in cylinder
To find slope, find rise over run (change in y over change in x). In this case, 12/3= 4.
