If u can help with both four and five I would so much appreciate it

Which sentence uses the word your correctly? o a. i didn't know your in my third period class. ob. where did you finally find your missing book? oc. i hope your feeling better in time for the party.

2(4p+1)/5< = (3+12p)/4 its less than or equal solve it for me an with explanation plz

Blank is the amount of energy in a sound wave per unit of time and is also related to the loudness of a sound