440 - 0.15(440) (option A)
Step-by-step explanation:
Original price = $440
discount = 15%
sales price of laptop = original price - discounted price
discounted price = $440 × 15%
discounted price = 440 × 0.15 = 0.15(440)
sales price of laptop = 440 - 0.15(440) (option A)