Evaluate the following function for the input given below:

  1. `f(7)` when `f (x) = (x^2-2+x)/(6x-4)`.

    `f(7)=`   s

  2. `g(-4.9)` when `g (x) = (-4x^2+1.6x-4(7-x))/(7.8-4x)`.

    `g(-4.9)=`  

  3. `g(m)` when `g (x) = 2/3x-4x^3+x (x+4)`.

    `g(m)=`  

  4. `f(x+3)` when `f (x) = 3x^2+7x-15`.

    `f(x+3)=`