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Question 1059585: Each month, Ashley pays $40 for her cell phone bill plus $0.05 for each text message that she sends. Determine whether the relation between the number of text messages she sends, x, and the amount of her cell phone bill,y, is a function. If it is a function, identify the domain and range.
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! C=40+0.05*t, where t= number of text messages
This is a function. There is no place where one gets 2 C values for the same t value.
The domain are all non-negative text messages. Zero is fine, but negative numbers are not allowed.[0,oo)
The range is all costs from $40 higher. [40,oo)
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