Which is an equation in point-slope form of the line that passes through the points (7,5) and (-4,-1)

What is the difference between regular convex and concave polygons

What ratio is proportional to 18/21

Anew obstacle course is home to several new types of challenging obstacles. one such obstacle is traversing a 15-stair staircase. to make it more challenging, the stairs are not uniformly spaced. rather, the vertical space between consecutive stairs for the first 10 stairs is 113 feet and the vertical space for the last 5 stairs is 134 feet. what is the total vertical distance traveled ascending and descending the entire 15-stair staircase?