Beat the Test #1 on page 105: Lyle and Shaun open savings accounts at the same time. Lyle deposits $100 initially and adds $20 per week. Shaun
deposits $500 initially and adds $10 per week. Lyle wants to know when he will have the same amount in his savings
account as Shaun has.
Part A: Write two equations to represent the amounts of money Lyle and Shaun have in their accounts.
Part B: Which method would you use to solve the problem, substitution or graphing? Explain your answer.
Part C: After how many weeks of making the additional deposits will Lyle have the same amount of money as Shaun?