Answer:
5 friends
Step-by-step explanation:
Since the snacks are worth $25, it is deducted from the total
10x=75-25
10x=50
x=5
ill say the 8 pack
i think n = 4
3(n+7) = 33
3n+21 = 33
3n = 12
n = 4
28
since the 5+2 is in parenthesis(don't know how to spell it its these things >( ) if you didn't know) you have to do 5+2 1st so thats 7 then you do 4*7 which is 28
