Correct Answer: First OptionThe given expression is

Simplifying the expression we get:
8:n is your expression that corresponds to the question.
Kyle has just finished playing his 6th game of the season (but there will be additional games to play before the season is over). He scores 4 points in this 6th game, bringing his per-game average down to 9 points. We need to write a formula for this average:
sum of all points scored by Kyle a+b+c+d+e+4
------------------------------------------- = ------------------------- = 9 points per game
6 games 6 games
This could also be written as a+b+c+d+e+4=(9 points/game)(6 games), or
a+b+c+d+e+4 = 54 points, or a+b+c+d+e = 50 points.
Now we have to think about the median. Since n (the number of scores) is an even number, we find the median of these scores as follows:
1) arrange the scores in ascending order (we always do this when finding a median score)
2) take the two middle scores, add them together and divide by 2, to determine the median score
I am posting this discussion now to ensure we don't lose it (since my Internet connection has not been dependable).
It's definitely cereal because you can see the different contents, making it heterogeneous. The rest of the options, whether mixtures or natural elements, are homogeneous because all the contents come together nicely.