Mathematics, 11.03.2022 18:10, hungtistic

The cost of car service is partly constant and partly varies with the time it takes to do the work it cost $3500 for a 5.5 hour service and 2900 dollars for a 4 hour service. a) find the formula connecting $3 with time T hours.
b) find the cost of a 7.5 hour service.

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