Let cost of each charm be [tex]x[/tex]
The cost of [tex]2[/tex] charms would be [tex]2x[/tex]
One chain is used in each of the three bracelets which costs [tex]\$4[/tex].
So, cost of one bracelet for one of her friends would be
[tex]2x+4[/tex]
Since, Janice makes three identical charm bracelets it would cost [tex]3(2x+4)[/tex] in total.
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