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Please explain.
A certain calling card gives you the following rate to call Malaysia. There is a connection fee of $0.39 which allows you to connect for up to (but not
including) one minute. For each additional minute or part of a minute, there is a $0.24 cent charge. (For example, 1 minute up to but not including 2 minutes costs $0.63.) This fare is only valid for up to (but not including) 40 minutes.
Express this information as a function, where f(x) represents the amount of money charged and x represents the number of minutes which have elapsed.
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