Which function describes this graph a. y=(x+5)(x-4) b. y=(x-3)(x-6) c. y=x^2-2x+4 d. y=x^2*9x+18

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

Solve -.016x= -16. need solving this

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square