T-Shirt Cost Joanne Wendelken sells silk-screened T-shirts at community festivals and crafts fairs. Her marginal cost to produce one T-shirt is $3.50. Her total cost to produce 60 T-shirts is $300, and she sells them for $9 each. (a) Find the linear cost function for Joanne’s T-shirt production. b) How many T-shirts must she produce and sell in order to break even? (c) How many T-shirts must she produce and sell to make a profit of $500?

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Sequence and Series

A sequence is defined as a collection of things. Series is defined to sum the things one by one in the sequence.  It was invented by German mathematician Carl Friedrich Gauss.