Mathematics, 21.01.2022 21:50 misstaejailicious200

Suppose that the credit remaining on a phone card (in dollars) is a linear function of the total calling time (in minutes). When graphed, the function gives a line with a slope of -0.16. There is $30.76 in credit remaining on the card after 36 minutes of calls. How much credit will there be after 42 minutes of calls?

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