The selling price of an item is $520. It is marked down by 10%, but this sale price is still marked up from the cost of $360. Find the markup from cost to sale price.

Plz, ! the box plot below shows the total amount of time, in minutes, the students of a class surf the internet every day: a box plot is shown. part a: list two pieces of information that are provided by the graph and one piece of information that is not provided by the graph. (4 points) part b: calculate the interquartile range of the data, and explain in a sentence or two what it represents. (4 points) part c: explain what affect, if any, there will be if an outlier is present. (2 points)

Can someone answer these problems for me

Does the point (1, sqrt 7) lie on circle shown.