The cost from part B is 18x + 18 and the cost when x (width of the rectangular garden) is 6, 8, and 9 are $126, $162, and $180 respectively.
length of the rectangular garden = 2x + 3 ft
Width of the rectangular garden = x ft
According to your question the cost from part B is as follows:
The cost that will be written on the top row of the table will be
The cost of the fencing material for different widths, x given in feet can be calculated as follows:
when x = 6
The cost will be as follows:
when x = 8
The cost will be as follows:
when x = 9
The cost will be as follows:
learn more on rectangle here: https://brainly.com/question/12868373?referrer=searchResults