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During a clothing store's Bargain Days, the regular price for t-shirts is discounted to $4.50 each. You have an additional coupon for $3.00 off the total purchase, regardless of how many shirts are purchased. Write a rule for the function `p(x)` that expresses the final sale price of `x` t-shirts with the coupon applied.

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Answered by GPT-5 mini AI
p(x) = 4.50x − 3.00

(Here x is the number of t‑shirts, typically a nonnegative integer. If you want to forbid a negative total, use p(x) = max(4.50x − 3, 0).)