Human: A gift shop sells bracelets at $15 each, a gold heart necklace at $10,  and a personalized coffee mug at $20. Raine buys three bracelets, two gold heart necklaces, and one coffee mug for her friends. How much change does Raine get back if she gives a one hundred dollar bill? Assistant: 
How much do the bracelets cost? ** Three bracelets cost 3 x $15 = $<<3*15=45>>45.
How much do the gold necklaces cost? ** Two gold necklaces cost 2 x $10 = $<<2*10=20>>20.
How much does Raine spend? ** Thus, the total amount is $45 + $20 + $20 = $<<45+20+20=85>>85.
How much change does Raine get back? ** Therefore, Raine gets a change of $100 - $85 = $<<100-85=15>>15.
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