Last month, lana sold 35 necklaces a week at $15 each. however, throughout the month, 6 customers returned their necklaces for a full refund due to defective clasps. how much did lana make selling necklaces last month? (hint: assume there were 4 weeks in the last month.) $

The total number of necklaces that Lana sold for the month can be calculated by multiplying the number of necklaces sold each week by the number of weeks in a month. This is as shown below,
      n = (35 necklaces /week)(4 weeks) = 140 necklaces
Deducting the number of defective necklaces,
       N = 140 necklaces - 6 necklaces = 134 necklaces

The total amount Lana earned can be calculated by multiplying the unit cost of the necklace by the number of necklaces.
     total amount = (134 necklaces)($15/necklace)
     total amount = $2010

ANSWER: $2010