options: Interpret functions that arise in applications in terms of the context.

Model periodic phenomena with trigonometric functions.

Use functions to model relationships between quantities.

Understand the concept of a function and use function notation.

Prove and apply trigonometric identities.

Build new functions from existing functions.

Extend the domain of trigonometric functions using the unit circle.

Construct and compare linear and exponential models and solve problems.

Analyze functions using different representations.

Define, evaluate, and compare functions.

Build a function that models a relationship between two quantities.

Interpret expressions for functions in terms of the situation they model.
problem_activity: Task
The population of a country is initially 2 million people and is increasing at 4% per year. The country's annual food supply is initially adequate for 4 million people and is increasing at a constant rate adequate for an additional 0.5 million people per year.
Based on these assumptions, in approximately what year will this country ﬁrst experience shortages of food?
If the country doubled its initial food supply and maintained a constant rate of increase in the supply adequate for an additional 0.5 million people per year, would shortages still occur?  In approximately which year?
If the country doubled the rate at which its food supply increases, in addition to doubling its initial food supply, would shortages still occur?


correct_option_index: 7