Consider the functions f(x)=x−7 and g(x)=4x3. What is f(x)+g(x)?

A) f(x)+g(x)=4x3+x−7

B) f(x)+g(x)=−4x3−x+7

C)f(x)+g(x)=x+x

D)f(x)+g(x)=4x3+x

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.