Examples 10/25
1. The population of Straightown in 1950 was 10,000. Suppose the population grows
linearly and the rate of change is 50 people/year. Can you predict the population in
2045?
2. Straightown again. Suppose the initial time is 1950, write down the general equation
of the linear function between year and population.
3. Until about 1850, humans used so little crude oil that we can call the amount zero
– at least in comparison to the amount used since that time. By 1960, humans had
used a total (cumulative) of 600 billion cubic meters of oil. Create a linear model that
describes world oil use since 1850.
4. Suppose you deposit $10,000 in to a bank with an APR of 14.87% and compound
annually. When will you have $20,000 in your account? How about $40,000 and
$80,000?