satwikap1376 satwikap1376 15-02-2024 Mathematics contestada A school library is planning to add a reference section to their collection. Which of the following represents one of the constraints of the system? a) 16x + 9y ≤ 20 b) 16x + 9y ≥ 20 c) 16x - 9y ≤ 20 d) 16x - 9y ≥ 20