What errors did the student make? Check all that apply. The percent values were written incorrectly in the equation. The amount of 7% solution should be written as 1 – x, not x – 1. The equation as written is solved incorrectly. x ≠ 1.17. x must represent the amount of the more highly concentrated solution. The interpretation is incorrect. 1 liter of 2% solution is needed to make 1.17 liters of 3.5% solution.

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?