A store has a 30 % sale on all items (x). For customers with a discount card, the store takes off an additional 10 % at the cash register. Write a price function S(x) that computes the final price of the item in terms of the original price x.

its a trick question

step-by-step explanation:

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x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72

what is the your question?