MATH 1030-7: Quiz 5

MATH 1030-7: Quiz 5
1. Suppose Straightown has a population of 10,000 in 1960 and 14,000 in
2000. And suppose the population grows linearly.
(a) (2 points) What are the independent variable and dependent variable?
(b) (3 points) Find a general formula for this linear growth. You should
explain the meaning of each variable in your equation.
2. (5 points) The population in Powertown grows exponentially at a rate of
4% every 5 years. That is, suppose the population is 10,000 in 2010, then
it would be 10,400 in 2015. Estimate the doubling time for the population
in Powertown.