Final answer:
To represent the scenario, a variable can be defined and an absolute value equation can be written. The minimum amounts that the artist received for her products are $292 and $348.
Step-by-step explanation:
To represent the scenario, we can define a variable, let's say x, to represent the time of year. Since the amount earned can vary by $28, we can write the equation as:
|320 - x| = 28
We can solve this equation by first setting up two separate equations:
320 - x = 28
320 - x = -28
Solving these equations, we find that x can take on two values: 292 and 348. Therefore, the minimum amounts the artist can receive for her products are $292 and $348.