At the beginning of the year, Savannah had $90 in savings and saved an additional $10 each week thereafter. Isaac started the year with $50 and saved $20 every week. Let SS represent the amount of money Savannah has saved tt weeks after the beginning of the year and let II represent the amount of money Isaac has saved tt weeks after the beginning of the year. Graph each function and determine the who has more money saved after 6 weeks.