You are budgeting for your vacation. The cost of the hotel room is $75 dollars a day, given by the function h(x) = 75x, where x is the number of days. Renting a car costs $40 plus $20 per day, and is given by the function c(x) = 40 + 20x. How much does it cost for both for 4 days?

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.