Answer :
According to the given data we have the following equation:
h(x) = 2x^2 + x - 7
In order to solve h(x) = 8 we would plug the value of 8 into the equation.
So:
h(8)=2(8)^2 + 8-7
h(8)=2*64 +1
h(8)=128+1
h(8)=129
Therefore, h(x) = 8 would be 129.