1. Find the requested terms for the following progressions:
(a) 50, 47, 44 , ............ 10th term is _________ 100th term is _________
(b) -5, 20, -80, 320 ............ 4th term is _________ 7th term is _________
2. A ball is dropped from a height of 20m. It bounces 60% of its previous height with each bounce.
a) How far does it bounce the first time ?
b) How far does it bounce on the fifth bounce ?
c) How far has the ball travelled after 5 bounces?