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Mathematics 7 Online
OpenStudy (anonymous):

Rosie spent 12 dollars more for fabric for a new dress than she did for buttons, and 1 dollar less for thread than she did for buttons. If b represents the cost, in dollars, of the buttons, represent in terms of b the total cost of the materials needed for the dress.

OpenStudy (anonymous):

(12 + b) <- cost of fabric (b - 1) <- cost of thread so the total spent is (12 + b) + (b - 1) + b = 3b + 11

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