You can put this solution on YOUR website!
Let x=that number
Now we are told that:
2x+28<=6x subtract 6x and also 28 from both sides
2x+28-28-6x<=6x-6x-28 collect like terms
-4x<=-28 divide both sides by -4 (remember, the inequality sign reverses)
x>=7
Hope this helps----ptaylor