Not sure about the others but
b) 8,192
the pattern is multiplying by 8 each time for b
I searched up it said 1,295,996,310
Use the quadratic formula to solve the equations . you will get the answers
If the recipe makes enough stew for 6 people, and the ingredients cost $9.75, then for 24 people it will cost $x. You can write this statement as
6 people - $9.75,
24 people - $x.
Or as proportion,

Find x:

Answer: It would cost $39 to serve 24 people