The perimeter is 36. what does x have to be?

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 9 + 12x + 4x^2

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.