The nutrition information on the cereal box says that a 1/2-cup serving provides 210 calories and 3 grams of dietary fiber. At that rate, find how many calories and grams of fiber are in a 1/3-cup serving. A 1/3-cup serving contains nothing calories. A 1/3-cup serving contains nothing grams of fiber.

Step-by-step explanation:

The nutrition information on the cereal box says that a 1/2-cup serving provides 210 calories and 3 grams of dietary fiber. It means that for a 1 cup serving, the number of calories would be 210 × 2 = 420 calories

Also, the number of grams of dietary fiber for 1 cup is 3 × 2 = 6 grams

Therefore, for a 1/3 cup servings, the number of calories it contains is

1/3 × 420 = 140 calories

Also, the number of grams of dietary fiber it contains is

1/3 × 6 = 2 grams

your answer would be 10x - 1