Ron bought 8 pencils and 2 erasers for $1.66. sarah bought 12 pencils and 5 erasers for $3.19. what is the cost for one pencil and one eraser

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