Sam loaned Sofia $5000 at an interest rate of 6%. She repaid him $5750 to cover the principal and interest. How long did she borrow the money?

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