a) is 20g since every serving contains 10 grams and he is taking 2 per day.
b) I found online that 1 cup of 1% milk usually contains 10g of protein.
Therefore you multiply 2.5 cups by 10g/cup since he consumed 2.5 cups of milk for breakfast and dinner and then add 20g for the muscle builder supplement. the total should now be 45g with the milk and protein.
orange juice contains 2g per cup (he consumed 6 oz)
double hamburger contains 20g
2 pieces of lasagna contain 41.04g
1 cup of loose leaf lettuce has
1 carrot has .6g
1/2 tomato has 0.5g
1 cup of vanilla milk has 8.6g
when you add all of those together you get a total of 137.74g
c) this is only 2.26 away from his protein needs as an athlete . (which was 140g)
Mark does need the protein supplement as an athlete.