Solve the system of linear equations. Check your solution. x+2y = 8
6x +9y = 39

(-14,-3)
(-2,-3)
(14,3)
(2,3)

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

Worth 100 points need the answers asap first row -x^2 2x^2 (x/2)^2 x^2 x is less than 2 x is greater than 2 x is less than or equal to 2 x is greater than or equal to 2 second row -5 -5/2 4 5 •2 is less than x& x is less than 4 •2 is less than or equal to x & x is less than or equal to 4 •2 is less than or equal to x& x is less than 4 •2 is less than x& x is less than or equal to 4

10x − 5y + 14 = 0 whats the answer pls