Acuboid has the width of x cm. the length of the cuboid is 4cm more than the width. the height is 4cm less than the width. the volume of the cuboid is 500cm^3. show that x satisfies the equation x^3-16=500

Abouncy ball is released from a certain height. on the first bounce, it travels 32cm. with each subsequent bounce, it travels 9/10 the distance of the previous bounce. what is the total distance that the ball has traveled when it completes its 25th bounce?

Aword processing program requires a 7- digit registration code made up of the digits 1,2,4,5,6,7 and 9 each number has to be used and no number can be used mor than once how many codes are possible

Plzzz answer both questions and i will give you 100 points