The equation for the pH of a substance is pH = -log[H], where H+ is the concentration of hydrogen ions. What is the
approximate pH of a solution whose hydrogen ion concentration is 2x 10^-9

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

What is the area of the original rectangle? 8 cm² 20 cm² 25 cm² 40 cm²

Which of the following describes how to translate the graph y = |x| to obtain the graph of y = |x+1|+1? shift 1 unit left and 1 unit down shift 1 unit left and 1 unit up shift 1 unit night and 1 unit down shift 1 unit nght and 1 unit up