Answer:
The independent variable on the x-axis is the price of a t-shirt and the dependent variable on the y-axis is the number of t-shirts sold.
Explanation:
To understand this question, it is crucial to understand what independent and dependent variables are. The independent variable is the one that is manipulated in an experiment. On the other hand, the dependent variable is the one that changes because of a change in the independent variable.
In this problem, the independent variable is the price of a t-shirt. Sera is able to change the price of her t-shirts at will, and changing it will impact the number of t-shirts sold. So, the dependent variable is the number of shirts sold. Sera has no direct control over this variable. She hopes that she will be able to control it by changing the cost of the t-shirts she sells.
Therefore, the independent variable is the price of a t-shirt and the dependent variable is the number of t-shirts sold.