<h3>Inequality</h3>
75d + 30c ≥ 255
<h3>Examples</h3>
(1) If someone bought five DVD players and ten cordless telephones, the equation ((75)(5)+(30)(10)≥255) would be true.
(2) If the electronic store had a parcticularly bad day and they sold two DVD players and one cordless telephone, the equation ((75)(2)+(30)(1)≥255) would be false.
If you play music then you won't get distracted by the outside world or if you study in a quiet room
