Which property says that if the same value is subtracted from both sides of a true equation, then the resulting equation is also true?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

The graph of y = ax^2 + bx + c is a parabola that opens up and has a vertex at (0, 5). what is the solution set of the related equation 0 = ax%2 + bx + c?

Explain how you can use the associative property to evaluate (7x50)x4.