Given that f (x) = 2x + 1 and g(x) = 6 - x, find the following. If necessary, use a 0 in the denominator!

a. ( f + g) (2) = ____________

b. ( f - g) (-5) = ___________

c. ( g - f) (4) = ____________

d. ( f ⋅ g) ( 1/2) = ___________

e. ( f/g) (-1) = _____________