Mike and Sarah are saving money for a gaming PC . Mike saves $2 per week and already has $30 in his bank account. Sara saves $4 per week and has $15 in her bank account. 1- write the equations to represent the amount of money Mike and Sara have saved using x to represent the weeks and y to represent the total amount saved.2- use substitution to predict the week in which Mike and Sara will have saved the same amount of money 3- explain what the solution means