6xzy 30 X 4x 18y2 Select one: O a. 5y 2 x ' y =0 O b. 5y 2 x x#0, y#0 O c. 5x 2v' yz0 O d. 5x 2y x#0, y*0 O e. None of these. What are the non-permissible values of the variable b in the following rational expression: 462 - 16b 6 2 - b - 20 X 362 - 156 462 + 16b Select one: O a. None of these. O b. -4, 5 O c. 0, 4, 5 O d. -4, 0, 5 O e. 4, 5State the quantity you have to multiply or divide the first expression by to get the second expression. 4a2 2a 28a ' 14 Select one: O a. None of these. Ob. x 2 O c. + 2 O d. X 2a O e. +2a Determine the non-permissible values of: x+3 x2 - x-12 Select one: O a. x # -3 or4 O b. x * 3 or -4 Oc. x# -3 Od. x # 4 O e. None of these.Assuming that x is a rational number, is the following a rational expression? If not, why not? 3x -19 ( V X )