Raymond B. answered • 01/21/21
Tutor
5
(2)
Math, microeconomics or criminal justice
-2x-4 = or < 8-4x
4x-2x = or < 8+4
2x = or < 12
x = or < 6
x<6
x is in the interval (-infinity, 6]
closed end point is indicated by a bracket ] which means x includes 6
but the lower end point is open, indicated by parenthesis ( which means it does not include negative infinity, but only approaches negative infinity. infinity is not a real number, just a limit that is approached but never reached.
