Answer:
 The original price of the bracelet before tax is $12.
Explanation:
Let us assume that the original price of the bracelet be x.
As given
Casey buys a bracelet. 
She pays for the bracelet and pays $0.72 in sales tax .
The sales tax rate is 6% .
6% is written in the decimal form.

= 0.06
Than the equation becomes
x × 0.06 = 0.72
 0.06x = 0.72

x = $12 
Therefore the original price of the bracelet before tax is $12.