How do you write "s is the set of natural numbers that are less than 8" in roster form

What is the slope of the equation y =

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges

72 the length of a side of a triangle is 36. a line parallel to that side divides the triangle into two parts of equal area. find the length of the segment determined by the points of intersection between the line and the other two sides of the triangle.