It is c because 8x2=16 and 8x4=32 and so on
The sequence is to take the previous number and multiply by 4, so the sequence is
3 12 48 192 768 3072 12288
add them all up and you get 16383
No when you subtract the 2 balances, there is a difference of 33.34. 1201.1-38.34=1162.76
You didnt include the (presumably) multiple choice answers. My guess is that the answer would be along the lines of: 20 - (P times .40)
When f is greater than 82.