7= -11 + 3(b+5)
solve each equation check your solution

Given that abcd is a rhombus, what is the value of x?

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x