In August, 85% of the middle school students voted in a school election. The number of students who voted was 544. How many students are in the middle school?

Which one ? is the answer and how to find this answer

41/17 as a decimal rounded to the nearest hundredth

Given right triangle a w/a hypotenuse length of x+4 and a leg of x, and right triangle b, w/ a hypotense length of 3y and a leg length of y+4 for what values of x and y are the triangles congruent by hl?