Today we had to find the cost of a 12 pack of Mountain Dew and a liter of Mountain Dew and see which one is the better buy. I did some research and found out that a pack of Mountain Dew cost 12.99. A liter of Mountain Dew costs about five dollars. I would say that a 12 pack of Mountain Dew is better because if you have people who want some, then you can give them a bottle of it. If you had a family who liked soda, then you can give the family a liter of soda.

    I used a math systems of equations. In algebra we used this to find out what was the better deal of going to different amusement parks. I used this to find out which is the better deal. You could pay little and get two liters of Mountain Dew for 10 dollars or get a 12 pack for 12.99. I would go with the 12 pack of Mountain Dew.

    There were so many things I learned in algebra that I didn't know about. There is one thing I remembered most and it was solving systems of equations. There are two ways to solve and it is substitution and elimination. Elimination is where you eliminate a variable that is the same for example, x=2 x=2, and you eliminate it. Substitution is where you substitute the variable with the expression. For example, if it is y=2x+7 and y=3x+9 then you substitute by putting 2x+7=3x+9.

    The thing that helped me learn this was remembering if the y's are the same, then it is a substitution problem. If no variable is the same, then it is an elimination problem. This really helped me because at first I didn't know how to do this. I got help from Mr.Erickson and it really helped me.