Home / Substituez \( x = 30 \) : \( P(30) = -2(900) + 120(30) - 1000 = -1800 + 3600 - 1000 = 800 \).Substituez \( x = 30 \) : \( P(30) = -2(900) + 120(30) - 1000 = -1800 + 3600 - 1000 = 800 \).February 22, 2026