The greatest common factor (gcf) is 6.
<u><em>$572.18 - $434.68 = $137.5, therefore $137.5 is the amount of the check.</em></u>
83 1/3 % = 5/6 so
20 = (5/6)x
x = (6/5)(20) = 24
x^2-9x-6=0
Use the quadratic formula to get (9+sqrt(105))/2 or (9-sqrt(105))/2
The value of X is 5 and QR is 34
