3 is being added each time, so:
-25,-22,-19,-16,-13,-10,-7,-4,-1,2,5,8
I hope this helps!
~cupcake
The problem statement appears to be trying to tell you that 60 million barrels of crude were processed, resulting in 34% of that volume being turned into gasoline, which was then sold for a total of $408 million. You are asked for the revenue associated with 1 barrel of gasoline.
($408·10^6)/(60·10^6 bbl × 0.34) = $408/(20.4 bbl) = $20/bbl
The income from one barrel of gasoline is $20.00.
_
9.5:12.6
That is the answer, btw the 6 is repeating