Evaluate the following function for the input given below:

1. `f(7)` when `f (x) = (x^2-2+x)/(7x-6)`.

   `f(7)=`   s

2. `g(-4)` when `g (x) = (-2x^2+1.7x-4(7-x))/(7.2-3x)`.

   `g(-4)=`  

3. `g(m)` when `g (x) = 2/3x-5x^3+x (x+2)`.

   `g(m)=`  

4. `f(x+3)` when `f (x) = 2x^2+6x-15`.

   `f(x+3)=`