If x is positive and x^2 = 729, what is the value of x?

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Anne plans to increase the prices of all the items in her store by 5%. to the nearest cent, how much will an artist save if the artist buys a canvas and a frame that each measure 24 by 36 inches before the price increase goes into effect?

Can someone me before febuary 1, 2019