Which conclusions can be drawn from the results of the survey? Check all that apply.
There is no association between using social
media and grade level.
The probability a student uses social media, given
that he or she is in a
A student who is more likely to not use social
media is in 8th grade.
An 8th grader is more likely to use social media
than not.
Knowing a student's grade level does not help
determine if he or she uses social media.

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10

the answer is a i belaeve atleast thats what my calculator just gfave me

step-by-step explanation: