What is the value of 9x27 + 2x31 - 28 = n

What is the 12th term of b(n)=-4-2(n-1)

Pranza plotted point a in the coordinate plane below.

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%