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You are considering two ways of financing a spring break vacation. You could put it on your credit card, at 18% APR, compounded monthly, or borrow the money from your parents, who want an interest payment of 10% every six months. Which is the lower rate? (Note: Be careful not to round any intermediate sfeps less than six decimai places.) The eflective annisal rate for your credit card is \%. (Round to two decimal places.)