consider f(x)= square root of x^2-1 and g(x) = square root of x^2+1. what values of x would make f(g(x)) and g(f(x)) cumulative

What is the factored form of x2 − 4x − 5? (x + 5)(x − 1) (x + 5)(x + 1) (x − 5)(x − 1) (x − 5)(x + 1)

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

What is the average rate of change for this function for the interval from x=2 to x=4 ?