<h3>Given:</h3>
The 
states that an expression that is given in the form of 
can be solved as 
. So:
▪ 
He has 9 choices for the first role, and that leaves him 8 people to choose for the second so he has 9*8 = 72 choices for the first two roles; that leaves 7 possible choices for the third role so that gives him 9*8*7 choices or 504 different ways he can assign the roles. i think this is correct.
22/11=2
Aldo paid $2 per pound
Hope this helps!
Inbetween each term, you are multiply by 4.
10 x 4 = 40
40 x 4 = 160
160 x 4 = 640
640 x 4 = 2560
Your next numbers are 640 & 2560.
hope this helps
