37 square = 136? What is the missing digit and explain how you got it.

What is the vertex form of f(x) = x2 + 6x + 3

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Solve the given system of equations. 2y= -x+9 , 3x-6= -15