Question

https://gyazo.com/df9486155c5825f62a44db942a6f1a49

Answer 1

Have you solved
-7x-11<-109?

Answer 2

no i need help.

Answer 3

your objective is to isolate x.
Try first isolating the -7x by adding 11 on both sides.

Answer 4

what do you get after doing that?

Answer 5

0?

Answer 6

xD i dont know ho to this this is a pr test

Answer 7

pre*

Answer 8

isn't a pretest testing to see where your knowledge is already at?
also what happen to your inequality when you added 11 on both sides? It is like you dropped the whole thing or something...

you had -7x-11<-109 and somehow you made all of it disappear?
Adding 11 on both sides looks like this:
-7x-11+11<-109+11
we did this to get -7x by itself
this works because -11+11 is 0
so you have
-7x+0<-109+11
or since adding anything to zero is still that anything you have
-7x<-109+11

Answer 9

yes thats a pretest but i dont know this stuff

Answer 10

i knew it was 0 so it stays the same?

Answer 11

I say try your best on the pretest then. I'm guessing since it is a pretest it is to see where the class is so the teacher knows where to begin, right?

Answer 12

If you don't know this, wouldn't you want your teacher to teach it?

Answer 13

yes -11+11 is zero
but it doesn't make the inequality disappear
you still have to add 11 to the other side as I did above

Answer 14

can you try simplifying the right hand side of the inequality

Answer 15

can you layout the problem?

Answer 16

so you can't do the -109+11?

Answer 17

i honestly dont know this stuff im trying my best to learn

Answer 18

-109+11
is the same as
-(109-11)
do you know how to take away 11 from 109?

Answer 19

yes

Answer 20

98

Answer 21

yes so -109+11 is -98

Answer 22

you there bud?

Answer 23

me?

Answer 24

sorry i didnt see you typing

Answer 25

\[-7x<-98\]
I will leave the rest to you because this is a test.
But I will give a 2 hints:
To undo the multiplication think division.
Also multiplying or dividing both sides by a negative number of an inequality will change the direction of the inequality.

Answer 26

its A

Answer 27

yes you divide both sides by -7
but -7 is negative so you have > instead of <
so
we have
x>-98/-7=14
x>14
which means you want everything bigger than 14

Answer 28

ik it

Answer 29

so i got it right it was A?