If n2 = 1/16, then n could be which of the following?

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Iknow its nothing to do with education, but what type of thing should i wrote here? ? : ) its for mcdonald's btw.