The answer is 4.5 l
To calculate this, we will use the Boyle's law using constant k, pressure P, and volume V:
 PV = k
We can forget temperature since it is constant.
We have:
P1V1 = k
P2V2 = k
So, P1V1 = P2V2
P1 = 3 atm
V1 = 1.5 l
P2 = 1 atm
V2 = ?
_____
P1V1 = P2V2
3 atm * 1.5 l = 1 atm * V2
4.5 atm/l = 1 atm * V2
V2 = 4.5 atm l / 1 atm
V2 = 4.5 l
 
        
        
        
Answer:
80 km/hr
Step-by-step explanation:
This is asking for speed. 
Speed=Distance/Time
Speed=720/9
Speed=80 km/hr
 
        
             
        
        
        
Answer:
Provide question
Step-by-step explanation:
Provide question
 
        
             
        
        
        
http://lianmath.com/describe-a-serie-of-shifts-that-translates-the-graph-yx-93-4-back-onto-the-graph-of-yx-3/