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which of the following can be used as "reasons" in a two-column proof
1). given
2). inductive reasoning
3). definitions
4). algebraic properties
(you can select more than one)

How do you use the elimination method for this question? explain, because i really want to understand!

Plz determine whether the polynomial is a difference of squares and if it is, factor it. y2 – 196 is a difference of squares: (y + 14)2 is a difference of squares: (y – 14)2 is a difference of squares: (y + 14)(y – 14) is not a difference of squares

If the cost to mail a package is an initial $5 and $0.28 for every pound the total cost to mail a package was $11.27, how much did the package weigh?