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You talk on the phone y minutes on a day x of every month according to the equation y=2x+1. The cellphone company claims you talked 12 minutes on the phone on the fourth day of …

You talk on the phone y minutes on a day x of every month according to the equation y=2x+1. The cellphone company claims you talked 12 minutes on the phone on the fourth day of …
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you talk on the phone y minutes on a day x of every month according to the equation y=2x+1. The cellphone company claims you talked 12 minutes on the phone on the fourth day of the month. Are they right?

User Mbesso
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No they are not , y= 2(4)+1 is 9 not 12
User Lenore
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