Suppose that ()=ℎ−1() j ( x ) = h − 1 ( x ) and that both j and ℎ h are defined for all values of x . Let ℎ(8)=4 h ( 8 ) = 4 and (9)=−1 j ( 9 ) = − 1 . Evaluate if possible and enter the value of the expression in the blank. If you do not have enough given information to evaluate the expression, enter unknown in the blank beside the expression. H^-1(-1)=
J(H(8))=
H(J(8))=
J(4)=
J(8)=
J^-1(-1)=
H(9)=

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14