three is subtracted from a number that is doubled this entire result is tripled which equals twenty one what is the number

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

If the discriminant if a quadratic equation is 4 which statement describes the roots?

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.