THis equals the number of permutations of 4 from 6.
= 6P4 = 6! / (6 - 4)! = 6! / 2! = 720/2 = 360 answer
When the last child has finished his or her schooling and is no longer dependent on the parents, the Echo stage begins. This is the pre-retirement or "empty nest" stage. For those individuals without children, the Echo stage begins about 10 years before retirement.
The slope is 1, -3 - 2 over 0 - 5 = -5/-5 which = 1
Well, the enlargement would be 3, because 15/5 is 3. So, the new measurements are no 9x15in.
