Karen runs a print shop that makes posters for large companies. it is a very competitive business. the market price is currently $1 per poster. she has fixed costs of $250. her variable costs are $1,000 for the first thousand posters, $800 for the second thousand, and then $750 for each additional thousand posters. instructions: round your answers to 3 decimal places. a. what is her afc per poster (not per thousand! ) if she prints 1,000 posters