I need to figure out how to find the answer to ABD and can someone check if I have ABC right pleaser

Identify one charcteristic of exponential growth

What number is 7 units left of -15?

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