Ataxi cost $1.65 for the 1st mile and $0.85 for each additional mile. which equation could be solved to find the number x of additional miles traveled in the taxi given that the total cost of the trip is $20?

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.