How do you solve the compound inequalities #60 < 20u < 120#?
#"divide all intervals by 20"#
#3< u < 6" is the solution"#
#u in(3,6)larrcolor(blue)"in interval notation"#
Remember, the end goal is to isolate
This means the solutions of this inequality are values of
We can alternatively write this in interval notation as
Notice that we used parenthesis as opposed to brackets when we don't include the end values.
Hope this helps!