A.) If Lucy sells 1 necklace, her sales would equal to $15.99. Then her profit would be:

Profit = $15.99 – $3.38(1) – $5.57(1)

Profit = **$7.04**

The fraction of the sale price of the necklace in profit is denoted as x.

15.99x = 7.04

x = **704/1559**

b.) This is the same as part (a) but in decimal form. Just simply divide 704 by 1559. The answer is **0.44**

c.) If Lucy’s sales is $223.86 and each necklace costs $15.99, then the number of necklaces sold is $223.86 ÷ $15.99/necklace = **14 necklaces**

Her profit for the 14 necklaces sold would be:

$223.86 – $3.38(14) – $5.57(14) = **$98.56**