Sam makes wooden carvings that he sells for $15. each craving cost $4 to make and he spends $1,200 per year on fixed costs. how many carvings must sam sell in order to make $4,300 in yearly profit?

Quadrilateral abcd in the figure below represents a scaled-down model of a walkway around a historic site. quadrilateral efgh represents the actual walkway. abcd is similar to efgh. what is the total length, in feet of the actual walkway?