Aperson who chooses a chicken leg that provides 0.5 milligram of iron and 95 kcalories instead of 2 tablespoons of peanut butter that also provides 0.5 milligram of iron but 188 kcalories is using the principle of nutrient: a. control. b. adequacy. c. density. d. moderation.

c. Density.

Explanation:

The principle of nutrient used here is Density. Here the person had two options either he could choose chicken leg or 2 tablespoon of peanut butter both provide 0.5 milligram of iron.

But since he wanted less calorie intake he chooses chicken leg as the calorie intake from peanut butter was almost twice from butter than from the chicken.  hence option is correct.

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.