Evaluate the following function for the input given below:
`f(8)` when `f(x) = (x^2-4+x)/(9x-5)`.
`f(8)=` s
`g(-5.3)` when `g(x) = (-4x^2+1.7x-4(8-x))/(7.5-2x)`.
`g(-5.3)=`
`g(m)` when `g(x) = 2/3x-5x^3+x(x+5)`.
`g(m)=`
`f(x+3)` when `f(x) = 5x^2+6x-13`.
`f(x+3)=`