For questions 15 through 19, use the following information.
A certain calling card gives 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.
15. Express this information as a function, where represents the amount of money charged and x represents the number of minutes which have elapsed.

Question

For questions 15 through 19, use the following information.
A certain calling card gives 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.
15.	Express this information as a function, where   represents the amount of money charged and x represents the number of minutes which have elapsed.

jcarter91198 · Answer

16.	What is the domain for this function?
17.	What is the range for this function?
18.	What is  ? What does this value represent in the context of the problem?
19.	Is this function one-to-one? How do you know?

jcarter91198 · Answer

18. F(2.5)