One model of earth's population growth is
p(t)=641+11e−.08t
, where t is measured in years since 1990, and p is measured in billions of people. which of the following statements are true? check all that apply.
a. the population of earth is increasing by a steady rate of 8% per year.
b. the carrying capacity of earth is 64 billion people.
c. the population of earth will grow exponentially without bound.
d. in 1990, there were 5.33 billion people.