Classify the solutions of 1/x+4+1/2=1/x+4 as extraneous or non-extraneous

What is the percentile for data value 6 in the following data set? 4 13 8 6 4 4 13 6 4 13 2 13 15 5 9 4 12 8 6 13 40 25 35 62

Mr.walker is looking at the fundraiser totals for the last five years , how does the mean of the totals compare to the median?

The width of a rectangle is half as long as the length. the rectangle has an area of 18 square feet. what are the length and width of the rectangle?