I need the answer please it’s my quarantine home work

For problems 29 - 31 the graph of a quadratic function y=ax^2 + bx + c is shown. tell whether the discriminant of ax^2 + bx + c = 0 is positive, negative, or zero.

Pls yall i really need the answer fr fr

Lena draws a square with an area that is greater than the area of rectangle b. what are two possible side lengths of lena's square? explain.