Final answer:
Based on the information provided and using the average of 9.1 Calories/g for fat, a food item with 27 grams of fat would contain approximately 245.7 Calories from fat alone. The best estimate from the given options, acknowledging additional calories from other nutrients, would be approximately 490 calories.
Step-by-step explanation:
To estimate the number of calories in a food item that contains 27 grams of fat, we can utilize the given information about calorie calculation for different nutrients. Since fat has an average of 9.1 Calories/g, we can perform a simple multiplication to estimate the calories from fat in the food item.
The calculation is as follows:
27 grams of fat x 9.1 Calories/g = 245.7 Calories from fat
Since this calculation provides only the calories from fat, and food typically contains other nutrients that provide calories (such as carbohydrates and proteins), the total caloric content would be higher when including these other macronutrients. However, without additional information about the content of these nutrients in the food item, we cannot determine the exact total number of calories. Therefore, among the options provided, c) Approximately 490 calories seems to be the closest estimate assuming the item contains additional calories from other sources.
If we had a scatterplot as mentioned in the question, we would look for the data point at 27 grams of fat and infer the corresponding calorie value. However, since the scatterplot is not provided here, we base the conclusion only on the calories contributed by fat which gives an incomplete picture. This response considers the direct relationship between fat content and calories where fat is known to be more calorie-dense than carbohydrates and proteins.