This can be expressed using the general formula for a² – b².
The count of people serves as the independent variable. The picnic's starting cost (initial fee) is $40. When more people attend, the picnic's overall expense rises.
We can simplify by reducing factors between the 5 and the 50, as well as between the 42 and the 3.
Answer:
The increase is linear since the data indicates that sunflowers grew by a consistent amount each month.
Step-by-step explanation:
Referring to the table

Observe that the months progress incrementally (21-1, 3-2=1, 4-3=1).
Moreover
![17.2-15=2.2\ [\text{from month 1 to month 2}]\\ \\19.4-17.2=2.2\ [\text{from month 2 to month 3}]\\ \\21.6-19.4=2.2\ [\text{from month 3 to month 4}]](https://tex.z-dn.net/?f=17.2-15%3D2.2%5C%20%5B%5Ctext%7Bfrom%20month%201%20to%20month%202%7D%5D%5C%5C%20%5C%5C19.4-17.2%3D2.2%5C%20%5B%5Ctext%7Bfrom%20month%202%20to%20month%203%7D%5D%5C%5C%20%5C%5C21.6-19.4%3D2.2%5C%20%5B%5Ctext%7Bfrom%20month%203%20to%20month%204%7D%5D)
This indicates a linear increase in sunflower count, as the data shows a consistent monthly rise.