pound.py

# 1 pound == 16 ounces
def ounce2pound(ounce):
  return ounce/16.0

def cost(ounces):
  return round(1.99*ounce2pound(ounces), 2)

print cost(1)
print cost(2)
print cost(3)
print cost(4)
print cost(5)
print cost(6)
print cost(7)
print cost(8)
print cost(9)
print cost(10)
print cost(11)
print cost(12)
print cost(13)
print cost(14)
print cost(15)
print cost(16)
print cost(17)