SOLUTION: inequaliyt 7<4x+3<21, what is the interval

Algebra ->  Coordinate-system -> SOLUTION: inequaliyt 7<4x+3<21, what is the interval      Log On


   

Question 42702This question is from textbook algebra and trigonometry
: inequaliyt 7<4x+3<21, what is the interval This question is from textbook algebra and trigonometry

Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
From
7 < 4x+3 < 21
we can treat this "pair" of inequalities as one if we're careful...
let us subtract 3 from all quantities first, then divide by 4 and we get
4 < 4x < 18
1 < x < 9/2
In interval notation, this is
(1, 9/2)