Well from what I've searched, I think that the canned Mountain Dew is a better deal than the liter Mountain Dew. I used the "percent of changes" method to solve this.
        In my search, the canned Mountain Dews were worth $15.99, while a liter Mountain Dew is worth $21.99. First , all I did was decide if it was a decrease or an increase, and in this situation, it is a decrease. Next you have to subtract $21.99 - $15.99, which equals $6.00. Then you have to create a ratio from the difference and the original amount, which is the bigger number. so the ratio would be $6.00/$21.00. Then you divide $6.00 by $21.00 to find the percent. When you find the answer, if it's reaches over 3 decimals, then stop at the third decimal (Example: .789). Then you have to skip two numbers to make it a percent (Example; 78.9). After that, you should round to the nearest whole number, which makes it an official percent, or you can just leave it as it is so it can be an extended percent. 
         There are also many non-mathematical reasons why you should prefer canned Mountain Dews over a liter Mountain Dew, but thinking mathematically could help a lot too.

     It's a new quarter. and also a new year! Many things have happened last year and during Winter break, which means that it's all in the past now. However, that doesn't mean that we can just forget the struggles from last year, because some how in some way, they can be useful for anything and anytime.
     The thing that I remember most about math is mostly all my mistakes. I remember that I had trouble with the Pythagorean Theorem, and also had trouble with remembering the properties. I remembered only the Commutative Property. It was a very big mistake, because since I forgot, my scores for my test weren't very well. Once, I asked Mr. Dorman for a hint, and he said, "Think Distributive Property." I was in a very big pinch, because  I couldn't remember what Distributive Property was. I ended up getting a "B" on that test because I missed two out of a total of 10 questions. I know that a "B" isn't really that bad, but I wanted to improve myself better, and to get a straight "A" instead of a "B." 
     That taught me to not forget the basics, and instead, to practice and study them, because you never know when there's a moment where you will need to review them. This goes out to all the things you've learned.