Answer:
16 dollars.
Explanation:
She already has 2 necklaces. For a total of 18 necklaces, she needs to pay for 16 more. One is 1 dollar so do 16 x 1 to find the amount of payment required.
Hope it helps!
16 dollars
she already owns 2 necklaces
18-2=16
1 necklace =1 dollar
16x1=16
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