1992 Honda Civic CV Boot and braking noises

Hello,
I recently had a cv boot and joint replaced on the left side of my car and this had cured the knocking that was happening while turning. I was hoping this would fix all of the noises going on, but that is not the case. I am not sure if this is a brake problem or a rack and pinion problem or something else entirely. When I am driving, about 70% of the time I get a whistle noise that seems to be coming from the front tire area. It is always there when I drive and increases while I brake. I have had a grinding noise a couple times while breaking which sounds like old pads to me. But I also noticed that both rack and pinion boots on the front are broken. I am also getting a humming noise while I drive. So I have a whistle noise that comes and goes but gets worse while breaking, and I also now have a louder humming noise that only goes away while I am stopped. What could possibly be the problem here?