No. 6. Calculate the rating for each model and find the model with the lowest rating. The formula for rating R is R=10(F+Q)+5D-0.01P, where P is the average price, F is functionality, Q is quality, and D is design.

Решение:

Формула рейтинга: \( R = 10(F+Q)+5D-0.01P \)

Рассчитаем рейтинг для каждой модели:

• Модель A: \( P=4000, F=2, Q=3, D=4 \) \( R_A = 10(2+3)+5(4)-0.01(4000) = 10(5)+20-40 = 50+20-40 = 30 \)
• Модель B: \( P=4700, F=3, Q=2, D=3 \) \( R_B = 10(3+2)+5(3)-0.01(4700) = 10(5)+15-47 = 50+15-47 = 18 \)
• Модель B: \( P=5600, F=4, Q=3, D=3 \) \( R_B = 10(4+3)+5(3)-0.01(5600) = 10(7)+15-56 = 70+15-56 = 29 \)
• Модель Г: \( P=3800, F=4, Q=1, D=1 \) \( R_\text{Г} = 10(4+1)+5(1)-0.01(3800) = 10(5)+5-38 = 50+5-38 = 17 \)

Сравним полученные рейтинги: \( R_A = 30, R_B = 18, R_B = 29, R_\text{Г} = 17 \). Наименьший рейтинг у модели Г.

Ответ: Г