need help on this problem!

[kelly.quintana]

Joanne sells silk-screened T-shirts at community festivals and craft fairs. Her marginal cost to produce one T-shirt is
$2.50. Her total cost to produce 60 T-shirts is $210, 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
$900?

 

[Deleted member 4993]

Joanne sells silk-screened T-shirts at community festivals and craft fairs. Her marginal cost to produce one T-shirt is $2.50. Her total cost to produce 60 T-shirts is $210, 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 $900?

First calculate the fixed cost of production from 'marginal cost to produce one T-shirt is $2.50' and " total cost to produce 60 T-shirts is $210".

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