Evaluate the following function for the input given below:

1. `f(7)` when `f (x) = (x^2-5+x)/(9x-4)`.

   `f(7)=`   s

2. `g(-5.6)` when `g (x) = (-3x^2+1.8x-3(6-x))/(8.5-5x)`.

   `g(-5.6)=`  

3. `g(m)` when `g (x) = 2/3x-7x^3+x (x+3)`.

   `g(m)=`  

4. `f(x+2)` when `f (x) = 5x^2+8x-13`.

   `f(x+2)=`