While on a beach, your friend discovers a genie. This genie offers two purses to choose
from and he gives you the following graph to show how the money in each purse will
grow. The set of triangular marks that lie on a line represent values in Purse A (blue), and
the set of square marks that make a curve represent those in Purse B (red).
Which bag should your friend choose if they want to be rich?
red
blue
