December + 724.37 January + 3,912.26
February - 1,051.51
March - 4,023.02

What is the overall profit or loss for the first four months the deli was open?

How do you solving the solution of each system using elimination?

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.

Precalculus question, image attached.