The number of pins Camila collected is an illustration of a linear function.
The linear function is: [tex]\mathbf{y =20 + 5x}[/tex]
The given parameters are:
[tex]\mathbf{Start = 20}[/tex]
[tex]\mathbf{Rate = 5}[/tex]
So, her monthly collection is:
[tex]\mathbf{y =Start + Rate \times x}[/tex]
So, we have:
[tex]\mathbf{y =20 + 5\times x}[/tex]
[tex]\mathbf{y =20 + 5x}[/tex]
Hence, the linear function is: [tex]\mathbf{y =20 + 5x}[/tex]
See attachment for the graph of the function
Read more about linear functions at:
https://brainly.com/question/20286983