A roller coaster climbs 115 feet on the first hill then drops 40 feet down. On the second hill the roller coaster climbs another 70 feet then drops 45 feet. What is the height at the end of the second hill Write an addition expression and evaluate. Make a T chart using Drops (-) and Climbs (+)

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.

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?