Least to greatest 5/8 2/5 5/6 1/2 3/7 put the smallest on top

The graph shown below expresses a radical function that can be written in the form f(x)=a(x+k)1/n+c what does the graph tell you about the value of n in this function

How do the graphs of y = 1/x and y=5/x+6 compare?

What is the standard deviation of the following data set rounded to the nearest tenth? 3, 17, 18, 15, 12, 21, 9