Answer:
![0.17\ \text{yards}](https://tex.z-dn.net/?f=0.17%5C%20%5Ctext%7Byards%7D)
Step-by-step explanation:
Total length of yellow fabric = 3.5 yards
of the yellow fabric was made to make a chicken costume.
So, the fraction of the yellow fabric used to make toys for her 7 dogs is
![1-\dfrac{2}{3}=\dfrac{1}{3}](https://tex.z-dn.net/?f=1-%5Cdfrac%7B2%7D%7B3%7D%3D%5Cdfrac%7B1%7D%7B3%7D)
The amount of fabric to make the 7 toys is
![\dfrac{1}{3}\times 3.5=1.17\ \text{yards}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B3%7D%5Ctimes%203.5%3D1.17%5C%20%5Ctext%7Byards%7D)
Assuming that equal amount of fabric was used for 1 toy for 7 of her dogs each.
The amount of fabric used for 1 dog's toy is
![\dfrac{1}{7}\times 1.17=0.17\ \text{yards}](https://tex.z-dn.net/?f=%5Cdfrac%7B1%7D%7B7%7D%5Ctimes%201.17%3D0.17%5C%20%5Ctext%7Byards%7D)
The amount of fabric used to make each banana is
.