Can anyone please answer this for me? it's ok if u don't add solutions (no links)

3. solve the given inequality and graph the solution on a number line.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible