Hello,
I had read your problems, are most of them have no step by step solutions, are just a simple notation or simples explanation of the solution, for example for to give a Leinibz notation for derivative given the functions. Other kile the grafical analyses leaves to more detailes work. With all, I can do the job completely and 100% accurate, but I realy need a day because here in Brazil is aready night and i have to sleep, so I could do your job in 3 hours today and 3-4 hours more tomorrow morning.
If you have not presure with the 12 hours anymore, than I can help you.
Thanks.