The speed of a rollercoaster is measured by t = V10m - 5 - 12 where m represents the speed in miles per hour and t is the time in
seconds. Determine the speed of the roller coaster at 13 seconds.

Aperpendicular bisector, cd is drawn through point con ab if the coordinates of point a are (-3, 2) and the coordinates of point b are (7,6), the x-intercept of cd is point lies on cd.

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.

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?