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# A pen costs \$t. A pencil costs half as much as a pen. A marker cost \$7 more than a pencil. A) what is the cost of the marker in terms of t? B)If the pen costs \$10, what is the cost of the marker?

Pen = t Pencil = t/2 Marker = (t/2)+7 If t = 10, Marker = (10/2) + 7 = \$12

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