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30 November, 05:00

A construction worker is sent to the store to buy more than 30 lb of roofing nails. The nails are sold in 5 lb boxes and 10 lb boxes. The number of 5 lb boxes is represented by x, and the number of 10 lb boxes is represented by y. Which inequality models this situation?

Question 1 options:

A:5x + 10y > 30

B:x + y ≥ 30

C:x + y > 30

D:5x + 10y ≥ 30

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Answers (1)
  1. 30 November, 05:13
    0
    The answer is A: 5x + 10y > 30. That is, the combination of boxes must be greater than 30 since the requirement is to have more than 30 lb of nails.

    Step-by-step explanation:

    The worker can buy a combination of boxes, as long as the total is greater than 30 lb. Multiply 5 lb by x and add that to 10 lb times y to get the total, which must exceed 30 lb.
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