The answer is C. you can check the attached picture.
They are all averages
mean=average 4+6=10, 10 divded by 2= 5, the mean is 5
median= middle number, 5 6 7, 6 is the median
mode= most repeated number, so 4,4,4,4,4,4,4,5.5,6 4 is the mode
Answer:
first one : (7+12+3+4+4+8)*2=76
They are parallel when the slopes are the same
example:
y=2x+3
y=2x-5
