Willis takes at a Single Payment Loan from Paydays. He borrows $250 for 14 days at 28% interest. What is the total amount Willis will have to pay back in 14 days?

6. sarah saved $12.75 every week for a number of weeks, w. she received an additional $25 during the last week in which she saved money. write and solve an equation to find the number of weeks, w, for which sarah had saved money if she has $114.25 now.