Suppose that the functions f and g are defined for all real numbers x as follows.

f(x)=2x+5

g(x)=6x

Write the expressions for (g+f)(x) and (g-f)(x) and evaluate (g. f)(-1).

Suppose that the functions f and g are defined for all real numbers x as follows.

f(x)=2x+5

g(x)=6x

Write the expressions for (g+f)(x) and (g-f)(x) and evaluate (g. f)(-1).