If |20x-10| = 170, then find the product of the values of x? Select.
A) -45  B) 50  C) -72  D) 35  E) -30
|20x-10| = 170   20x-10 = 170 or 20x-10 = -170   20x = 180 or 20x = -160   x = 9 or x = -8   product = -8*9 = -72   Answer is -72
<result>C</result>
If |20x-10| = 170, then find the product of the values of x?