A plumber charges $93 for a job which takes 2 hours and $141 for 4 hours of work. Let $C be the plumbing cost for t hours of work. What is the linear rule connecting C and t?

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- May 18th 2009, 01:59 AM #1

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- May 18th 2009, 03:47 AM #2

- May 18th 2009, 09:10 AM #3

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