math problem

Question

In 1990, the number of american bald eagles was estimated to be 3200 breeding pairs. In 1994, the estimate was 4000. Assume that the number of breeding pairs has increased at a constant rate since 1990

 

 

Answer 1

1990 3200

1994 4000

an increase of 800 in 4 years = 200 per year increase

eagle population = E(t) where t= years since 1990

E(t) = 3200+200t

or let t= the year AD or CE

then

E(t) = 3200+200(t-1990)

= 3200+200t - 200(-1990)

= 200t +3200- 398,000

E(t) = 200t - 394,800

zero eagles in 1830 AD, when 3200-200(160) = 0

so where did the 80 eagles come from in 1831 AD? out of 0 eagles the year before?

evolved from dinosaurs? created ex nihilo?