# math

I asked sue a question yesterday and don't understand the answer can you explain?
Here what it was
I think this question has a typo because none of the multiple choice answers fit.

The question is which of the following values is in the solution set of inequality 8-7x<-6?
A) -3 B)-2 C)2 D)-6

A if you plug in -3 you get
29<-6 no
B) 8+14<-6 no
c) 8-14<-6 so -6<-6 no
D) 8+42<-6 no
Did I do something wrong or are there no correct answers?
Thank you

•math - Ms. Sue, Thursday, December 27, 2012 at 6:44pm
8-7x<-6

-7x < -6 -8

-7x < -14

x = 2

SO WHEN SUE WROTE X=2 shouldn't it be
WHEN YOU SOLVE IT IS X<2
Then when you check it
8-7x<-6
8-7(2)
8-14<-6
THANKS

1. 2
1. X= 2 leads to -6 on both sides, so "2 is not in the solution set. Neither are the other choices.

You are correct.
C only works if < is replaced by </

posted by drwls
2. let's just solve it ....

8 - 7x < -6
-7x < -14
divide by -7, remember that when we divide by a negative, the inequality sign has to be reversed, so

x > 2

obviously , only positives , so all those negatives can be ruled out

x = 2 does not satisfy x > 2
so there is no answer match-up in the given choices

Look again a the question
Is it it 8 - 7x ≥ -6 ?

if so, then x = 2 would be a solution.

posted by Reiny
3. It does not say xgreater than and equal to , so I believe the question is a misprint.
Thank you

posted by Es
4. good grief You are feisty and sarcastic

posted by Random Guy
5. Since when was grief good.
Grief:deep sorrow, especially that caused by someone's death.
look it up yourself!!! Bucko

posted by Random Guy
6. same to you and many more

posted by stupidity
7. Ummm

posted by Peanut butter lover

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