As we have seen in previous exercises, there are relationships between various nutrient components in foods. It is far more likely that rather than a linear relationship between any two, there is a complex relationship among many variables. The equation shows the relationship between the number of kilocalories in 100 grams of a fruit or vegetable and the number of milligrams of vitamin C (x₁), grams of carbohydrates (x₂), and grams of water (x₃).

Y (kcal) = 442.4 - 0.019834x₁ - 0.51418x₂ - 4.4784x₃

Find the number of kilocalories in 100 g of a fruit with 12 mg of vitamin C, 15 g of carbohydrates, and 75 g of water.