What is the value of r? What is the length of segment EF? units

The graph below represents the number of dolphins in a dolphin sanctuary. select all the key features of this function.

Prove that quadrilateral is a rhombus.

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)