‏type of advance medical directive does the AMA recommend? Living will or Durable power of attorney ‏I need a definitive answer to this question, please

The area of a rectangle is 54x^9y^8 square yards.if the length of the rectangle is 6x^3y^4 yards,which expression represents the width of the rectangle in yards

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Find the nonpermissible replacement for binthis expression.b2/5b +5