Having trouble with problem sets

1. Consider a firm operating in a perfectly competitive market.
a.  How much output will this firm produce ?
b.  How much profit (or loss) is this firm making in the short run ?
c.  What is the value of average fixed cost at this profit-maximizing output?
d.  At what output will average variable cost be minimized?
e.  What is the value of average variable cost at its minimum point?
f.  If price falls to $5, how much out put will this firm produce?


(see full questions in attachment)