Help or ill get held back

Which of the following is true for the relation f(x)=2x^2+1

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4

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%