Domain and range of each function
Response to the following problem:
Examine several newspapers and magazines and describe at least three examples of functions that appear. What is the domain and range of each function?
EXAMPLE :
The amount of money you pay for a gym membership is a function, because you pay a fee each month in addition to the initial fees for joining. In this case, the amount of money you pay is dependent on how many months you continue to be a member of the gym, so the amount of money you pay is the dependent variable (or range) and the number of months you continue to be a member of the gym is the independent variable (or domain).
Some possible domain values could be (1, 2, 3, 4) months.
Some possible corresponding range values could be (80, 110, 140, 170) dollars.
In fact, this function could be written as f = 30m + 50 where f is the total amount of money you pay, m is the number of months you continue to be a member of the gym, 30 represents the $30 amount you pay each month, and 50 represents a flat $50 fee you pay to initially join the gym.