Question 101772
Evaluate the function.
36).   Find h(3) when h(x) = x2 - 5x - 6

I'm assuming you mean {{{h(x) = x^2-5x-6}}}. If so, then substitute in the equation for x=3 or {{{h(3) = 3^2-5(3)-6}}}. 
h(3) = 9 - 15 - 6
h(3) = -12