17
RCMultiple Choice

Trigonometric Sum Identities — Cumulative exam

Question 17 • Precalculus

Marie spends $450.00 at a department store. She has two coupons: one for a 15% discount and one for $50 off any purchase above $300. The store allows the coupons to be combined. Which coupon should be applied first, and what is the final purchase price?

Answer
A
Apply the 15% discount first, and the final purchase price is $332.50.
B
Apply the 15% discount first, and the final purchase price is $340.00.
C
Apply the $50 off first, and the final purchase price is $332.50.
D
Apply the $50 off first, and the final purchase price is $340.00.

Explanation

Apply the 15% discount first: 15% of $450 is $67.50, leaving $382.50. The $50 coupon then reduces the price to $332.50. Applying the $50 coupon first would leave $400, and 15% off that amount would result in $340, so applying the percentage discount first gives the lower final price.

AI-written and checked against the verified answer.

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