The product of A is rational = -8/21
The product of B is also rational =2 x 3 =6
The product of C is irrational =sqrt(7) / 7 =0.377964473........is irrational
The product of D is rational = 7 x .07 =0.49
Both 8 and 1/8 are rational and their sum = 8+1/8 =8 1/8 = 65/8 is rational. Or B, of the 4 choices.
+166 Yes, because 1/8 and 8 are both rational. Therefore it is B since that would add up to 65/8 or 8 1/8
