What Age and Breed are my Chickens? Really need help.

[BlackRock13]

I have 4 lovely chickens (all female pullets) and I want to know if there really 12 and a half weeks old.
I`ve heard that some chicken breeds can be different then from what expected.
Here are the photos.
White Sussex-



Black Rock-


Rhode Island Red-


White Leghorn-



The farm that I bought this from said they were 9 weeks old,a couple of weeks have passed and there 12 and a half weeks old but is it true?
(Sorry if the pictures are not clear)
Thanks

 

[ramirezframing]

Light sussex, black sex link, red sex link, last might be a white leghorn

 

[Fred's Hens]

Age estimate also looks to be correct.

 

[BlackRock13]

Thanks for your help

 

[WalkingOnSunshine]

I agree with the above. The "black Rock" is a black sex link and the "Rhode Island Red" is a red sex link.