A study on eye color was performed at an elementary school. The allele for brown eyes is dominant over the allele for blue eyes. Using the data given, what is the number of students in the 2000 sample that was taken that are heterozygous assuming the group is in Hardy-Weinberg equilibrium

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.