Oh dear.. Your husband has a drinking problem, period.
You need to go to an ALAnon meeting. You need to go to a family counselor.
Then you need to realize your husband is way out in left field about your daughter..
B., your daughter is a very bright girl and knows she is not dealing with a man that has his head on straight. This is causing friction and chaos in your home. This is why she has no respect for him.. I know because this sounds like my father.. It did not matter what the rule was, I was never going to be able to make him happy, because HE was not happy. He would set up these rule traps, word traps and make excuses for why he "had to change the rules"..
Do not let him do this to your daughter another day. You need to make sure she does not feel like she is loosing her mind and that her home is a battlefield.
This is going to take tremendous strength on your part. Your husband is going to be pissed and in denial, but I am telling you, he has a real problem and it is alcohol..
Remember. Your daughters #1 priority is school. She has a passion for sports which is very healthy and will help to keep her out of trouble.. She does not need a job. She is only 15. Maybe some baby sitting, maybe some tutoring, but here in Texas she would need to be 16 and I would doubt with her schedule she would have time to make the commitment to a job.
She watches her little brother for 2 hours 5 days a week? Maybe there is another child that she could also watch and be paid a little. Maybe she can do her own laundry and clean her and her brothers bathrooms as chores? Maybe start dinner? Would this count as helping out?
What does your husband do around the house? Take a look at what he is demanding and see what his output is.. It will take a while till you can even bring this up with him, but you are very quickly going to realize his own demands do not match his output..
I am sending you strength.