In the diagram​ below, what is the relationship between the number of pentagons and the perimeter of the figure they form?

Represent this relationship using a​ table, words, an​ equation, and a graph. Let x = the number of pentagons. Let y = the perimeter of the figure.

Represent the relationship using a table. Complete the table below.

1 [ ] [ ]

2 [ ] [ ]

3 [ ] [ ]

1 45 10

2 90 20

3 135 30