What is the perimeter of a triangle with side lengths of 9, 12, and 4x?

1. 25
2. 25 + x
3. 21x
or
4. 21 +4x

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships

Joline is solving the equation 0=x^2-5x-4 using the quadratic formula which value is the negative real number solution to her quadratic equation round to the nearest tenth if necessary

Select all of the categories that apply for the figure below. quadrilateral, trapezoid, parallelogram, rhombus, rectangle, square