One you can make out of paper, the other is paper. ^-^
Answer:
The expressión that represents the length:
a = 2w + 1
a = length of the rectangle
w = width of the rectangle
Based on your question and based on the graph that you show. I conclude and get an answer that the vertex of the graph is (1,3) and the answer to your second question is maximum. I hope i answer your question directly
The smallest number would be 4
the three numbers would be 4, 10, and 14, which would have a sum of 28