Which of the following transformations is a function daily high temperature?
a) Daily high temperature -> Date
b) Last Name -> Telephone Number
c) Random Number from 1 to 10 -> Random Number from 1 to 10
d) Social Security Number -> Last Legal Name
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a) Daily high temperature -> Date
Explanation: A function is a relation where each input (in this case, daily high temperature) is related to exactly one output (in this case, date). However, the same high temperature can occur on multiple dates, so this transformation is not a function.
b) Last Name -> Telephone Number
Explanation: This transformation is not a function because multiple people can have the same last name but different telephone numbers.
c) Random Number from 1 to 10 -> Random Number from 1 to 10
Explanation: This transformation is not a function because a random number from 1 to 10 can be related to any random number from 1 to 10, not a unique one.
d) Social Security Number -> Last Legal Name
Explanation: This transformation is a function because each social security number is unique to a specific individual and therefore corresponds to a unique last legal name. Even if two people have the same last name, their social security numbers will be different.
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