probability

A. Assume that the situation can be expressed as a linear cost function. Find the cost function. Fixed cost is $100;80 items cost $1700 to produce. B. Assume that the situation can be expressed as a linear cost function. Find the cost function in this case. Marginal cost: $35;120 items cost $7000 to produce. C. Joanne sells silk-screened T-shirts at community festivals and craft fairs. Her marginal cost to produce one T-shirt is $3.50. Her total cost to produce 70 T-shirts is $305, and she sells them for $8 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 prot of $600? D. [The manager of a restaurant found that the cost to produce 300 cups of coffee is $30.13, while the cost to produce 400 cups is $39.73. Assume the cost C(x) is a linear function of x, the number of cups produced. Answer parts a through f