Help me pls with my mathh

What properties allow transformation to be used as a problem solving tool

1. a parachutist is 800 feet above the ground when she opens her parachute. she then falls at a constant rate of 5 feet per second. select the equation that represents this situation. h = -800t + 5 y = -5x + 800 h = 5t - 800 y = 800x + 5 i need

What is the similarity ratio of a cube with volume 729m^3 to a cube with volume 3375 m^3