Can someone please help me with this!!!! I do not understand... PLEASE!!...

Question

anonymous · Answer

attachment

anonymous · Answer

1 AND 2 are correct

anonymous · Answer

I dont think 3 is correct

anonymous · Answer

1 is right
2 is right
3 is wrong

anonymous · Answer

for 3, add 4 all the way across, then divide by 2

anonymous · Answer

I dont understand.. where do i add 4 at and why?

hartnn · Answer

-8≤2x-4<2
adding 4 to this means
-8+4<=2x<2+4
that is adding 4 to all the terms........
get this?

anonymous · Answer

yes

hartnn · Answer

so what u get finally?

anonymous · Answer

so would it be the second answer -2<=x<-1??..

hartnn · Answer

4+2=6
when u divide by 2,u get 3 on right side.......

anonymous · Answer

oops, i put the wrong one.. i was looking at one and and thinking another..

hartnn · Answer

u want 4 or u got that?

anonymous · Answer

I dont have 4, 5, 7, or 8:\
and im not sure about 6 or 9... 
if you dont mind helping me?

anonymous · Answer

I marked what i think the answers are for 6 and 9 but i second guessed myself

hartnn · Answer

if u can do 4,u can do 5,6 also
so.i'll tell u what to do in 5,u do 4,6
first remember this:if
$$|ax+b|<c $$
then
$$(ax+b)<c$$
or
$$(ax+b)>-c$$
ok ? remembered this?

anonymous · Answer

I do remember that...

hartnn · Answer

so continuing with 5
|2x+7|≤27
(2x+7)≤27
or
(2x+7)≥ -27

so x≤10
or x≥-17
got this?

anonymous · Answer

yes..

hartnn · Answer

so its option A. right?
can u do 4,6??

anonymous · Answer

yes.
so i didnt do 6 right?

anonymous · Answer

so 4 would be a aslo if i did it right

hartnn · Answer

yup :)

anonymous · Answer

and 6 would be b?? i think

anonymous · Answer

or c

hartnn · Answer

6 was correct,C

anonymous · Answer

now i just need help with 7
i think i did 8 and 9 right

hartnn · Answer

what u got 8th answer?
9th is incorrect.........

anonymous · Answer

8 would just be putting the numbers in place of the letter right?

hartnn · Answer

but whats your final answer for 8th?
use |-a|=a

anonymous · Answer

bc it doesnt say solve or anything

hartnn · Answer

but i think u need to get the value
whats
|-2|+(-2)^3 ??

anonymous · Answer

-6

hartnn · Answer

right,check 9th again

anonymous · Answer

im not sure about that one... 
or number 7

hartnn · Answer

whats -6d-3d ?

hartnn · Answer

it would be -9d
so your 9th answer is 13c-9d

anonymous · Answer

o what about  7 thats the one i really dont understand