The movie shop sells posters for $7 dvd for $15 and cd for $9 write an expression to represent the total cost for 2 posters d dvd and c cds

Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image