SOLUTION: 5> -2x +4 or 11<_ -5x +4 Choose the solution of the inequality. A) (-1/2,oo) b) (-oo, -7/5] c) (-oo, -7/5] u (-1/2,oo) All parenthisis above are all the bigger ones that

Question 143691: 5> -2x +4 or 11<_ -5x +4
Choose the solution of the inequality.
A) (-1/2,oo)
b) (-oo, -7/5]
c) (-oo, -7/5] u (-1/2,oo)
All parenthisis above are all the bigger ones that i do not have on this computer. The are more longated than the regular parenthisis.
D) (-oo,oo)
The above parenthisis is the only normal paranthesis. The oo looks like a 'sideways or laying down 8.
Can someone please oh please help me with this problem I do not unstand this at all, no matter how many time i have read the chapter, i still dont get it..
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the first inequality

Subtract 5 from both sides

Add 2x to both sides

Combine like terms on the right side

Divide both sides by 2 to isolate x

Reduce

So our answer is which looks like

in interval notation

--------------------------------------------------

Now move onto the second inequality

Subtract 11 from both sides

Add 5x to both sides

Combine like terms on the right side

Divide both sides by 5 to isolate x

Reduce

So our answer is which looks like (

] in interval notation.

Now combine the two solutions sets to get

(

]

note: the "sideways 8" is the infinity symbol.

So the answer is choice c)
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