Which pair of expressions are equivalent? A 3x +5+2(6+4) and 3x +21
B (x + 5) - 2 and x + 7
C 2(x + 5) + 6 and 2x +16
D (x + 5) - x and 2x + 5

What properties allow transformation to be used as a problem solving tool

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -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.