Jillian’s cell phone plan costs $55 per month, and includes 4GB of data usage. Each extra gigabyte, or part thereof, costs $15. Express the cost c(x) of using xGB in a billing period as a piecewise function using the greatest integer function.

Chapter 11, Application 11.6 #10

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Jillian’s cell phone plan costs $55 per month, and includes 4GB of data usage. Each extra gigabyte, or part thereof, costs $15. Express the cost c(x) of using xGB in a billing period as a piecewise function using the greatest integer function.

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ISBN: 9781337271790