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Math 25
 Calories Homework 

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S7. Liam weighs 165 pounds. If he swims for 45 minutes, how many calories does he burn?

520 calories 743 calories 5,198 calories 7,425 calories

S8. One serving of oatmeal has 3 grams of fat, 31 grams of carbohydrates (including 1 gram from sugar), and 6 grams of protein. Change to calories these amounts of fat, carbohydrate, sugar, and protein.

12 calories fat, 124 calories carbs (including 4 calories sugar), 24 calories protein
12 calories fat, 297 calories carbs (including 9 calories sugar), 24 calories protein
27 calories fat, 124 calories carbs (including 4 calories sugar), 24 calories protein
27 calories fat, 297 calories carbs (including 9 calories sugar), 24 calories protein

S9. Caroline is an 80 year old woman, not physically active, who weighs 120 pounds and is 5' 3" tall. She walks for 15 minutes to the grocery store, shops for 20 minutes, and walks 15 minutes home. How many calories does she burn?

67 calories 133 calories 200 calories 268 calories

S10. When Caroline walks, 60% of the calories she burns are fat calories (because of her age and other factors). How many fat calories did she burn from her 30 minutes of walking to and from the grocery store?

80 fat calories 120 fat calories 200 fat calories 800 fat calories

S11. One 1-cup serving of 2% lowfat milk has 5 grams of fat, 12 grams of carbohydrates (all 12 from sugar), and 9 grams of protein. Throughout the day Caroline drinks three cups of 2% milk. How many calories of fat is this?

20 fat calories 45 fat calories 60 fat calories 135 fat calories

S12. Caroline's DCI is 90% of the USDA expectation of 2,000 calories per day. So her recommended daily fat intake is 65 grams for a 2,000 calorie diet × 0.9 ≈ 59 grams of fat per day. What percentage of her recommended daily fat intake are those three cups of lowfat milk?

7% 25% 42% 72% 85% 393%

S13. Zachary is a 35 year old man, moderately active, who weighs 150 pounds and is 5' 7" tall. He bikes for 15 minutes to the gym, lifts weights for 30 minutes, and then bikes 15 minutes home. How many calories does he burn?

101 calories 177 calories 279 calories 379 calories

S14. One 38-gram serving of dark chocolate has 15 grams of fat, 19 grams of carbohydrates (10 from sugar), and 3 grams of protein. Throughout the day Zachary eats four servings of dark chocolate. How many calories of sugar is this?

36 sugar calories 40 sugar calories 40 sugar calories
120 sugar calories 144 sugar calories 160 sugar calories

S15. Zachary's DCI is very close to the USDA variation of 2,500 calories per day. He can simply use its recommendation of no more than 63 grams sugar per day. What percentage of his recommended daily sugar intake are those four servings of dark chocolate?

25% 28% 57% 63% 158% 175%

S16. Write a formula that outputs the total calories in a food, if you plug in the grams of fat, carbohydrate, and protein.

calories = (fat grams × 9) + (carb grams × 4) + (protein grams × 4)
calories = (fat grams ÷ 9) + (carb grams ÷ 4) + (protein grams ÷ 4)
calories = (fat grams × 4) + (carb grams × 9) + (protein grams × 9)
calories = (fat grams × 9) + (carb grams + protein grams) × 4