Answer:
y = 
Step-by-step explanation:
m = 
Answer:
x+2
Step-by-step explanation:
The firs 3 observations are x, x+2, x+4
Mean = sum of data/samaple size
Mean = x+x+2+x+4/3
MEan = 3x+6/3
Mean = 3(x+2)/3
Mean = x+2
Hence the required mean is x+2
It's 28.7
Hope this helped!
The answer is

or you can replace -1/5 with -0.2
follow the procedures in the attachment please.
To find volume you use the formula length×width×height. a cube has all same measurements. So 3×3×3 is 27. the volume is 27 inches cubed