Sonia opened a savings account and then added the same amount to the savings account eyery week. After 5 weeks, her savings account had a total of $45. After 10 weeks, her savings account had a total of $70, Which equation represents the amount of money V.), in dollars, in Sonia's savings account after x weeks? y = 7x = y = 5x + 20 y = 20x + 5 ​