can i get help with this three questions please?

You are thinking about buying a savings bond. The bond costs 557 loday and will mature in 8 yoars with a value of $114. What annual interest rate will the bond eam? The bond will earn an annual rate of x. (Round to two decimal places.) Due to your good crodit, your bank reduces the interest rate on your $10,000 losn from 8.1% to 7.2% per year. Thanks to the change, how much will you save in iniarest this year? The amount you will mme in interest this year is 3 (Round to the nearost dollar.) You expect to have $4,000 in one year. A bank is offering loans at 6.0% interest per year. How much can you borrow today? Today you can borrow $ (Round to the nearest cent.)