Suppose that the amount of algae in a pond triples every 2 hours. if the pond initially contains
80 pounds of algae, how much algae will be in the pond after 8 hours? 720
1,280
6,480
320

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.