How do you find the measure of an angle?

The highest point on earth is the peak of mount everest if you climb to the top you would be approximately 29,035 feet above sea level at remembering that amount is 5280 feet percentage of the height of the mountain would you have to climb to reach a point 2 miles above sea level

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

The price of an item has been reduced by 30%. the original price was $30. what is the price of the item now ?