The monthly cost (in dollars) of a long-distance phone plan is a linear function of the total calling time (in minutes). The monthly cost for 37 minutes of calls is $18.68 and the monthly cost for 71 minutes is $21.74. What is the monthly cost for 48 minutes of calls?

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A: We have to model the given situation with a linear function.

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A:

Q: A cellular phone company offers several different service options. One option, for people who plan…

A: The objective of the question is to formulate a linear function that represents the monthly cost of…

Q: A cellular phone company offers several different service options. One option, for people who plan…

A: Solution:-

Q: Find a linear cost function. Thirty units cost $1500; 120 units cost $5640.

A: From the given data:

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Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.