Afew "safe as houses" alarms have been redesigned in an attempt to reduce the large number of complaints where alarms have sounded by accident. one of the new types of alarms is less sensitive than its predecessors. studies have shown that these newer alarms are rarely activated for no reason. "safe as houses" still sells a number of the original, sensitive alarm systems, because the increase in threshold for motion detection means that the new style alarms may fail to register break-in where limited force is being used.(some people prefer to buy alarms that sometimesactivate for no reason).

Jamie is saving for a trip to europe. she has an existing savings account that earns 3 percent annual interest and has a current balance of $4,200. jamie doesn’t want to use her current savings for vacation, so she decides to borrow the $1,600 she needs for travel expenses. she will repay the loan in exactly one year. the annual interest rate is 6 percent. a. if jamie were to withdraw the $1,600 from her savings account to finance the trip, how much interest would she forgo? .b. if jamie borrows the $1,600 how much will she pay in interest? c. how much does the trip cost her if she borrows rather than dip into her savings?