Researchers were interested in looking at air quality in different regions of the United States. The following dot plot represents the number of days in a certain month that the air quality was unhealthy for eighteen cities in the Midwest. 10
Days
Which of the following box plots represents the same data displayed on the dot plot above?

b

Step-by-step explanation:

you have to find the mean of the equation

answer: 1 2 3 6

step-by-step explanation:

1x6=6 2x3=6

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1