Calculate the number of oxygen atoms in 3.2g of sulfur dioxide (SO4)

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.

Which statements are true? check all that apply. the line x = 0 is perpendicular to the line y = –3. all lines that are parallel to the y-axis are vertical lines. all lines that are perpendicular to the x-axis have a slope of 0. the equation of the line parallel to the x-axis that passes through the point (2, –6) is x = 2. the equation of the line perpendicular to the y-axis that passes through the point (–5, 1) is y = 1.

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?