Question

1 & 4 please help me

Answer 1

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).