Answer:
Concave down
Y-intercept: (0,-3)
X-intercepts: (-1,0) (-3,0)
Vertex: (-2,1)
 
        
             
        
        
        
Answer:
$15.2
Step-by-step explanation:
 
        
             
        
        
        
Answer:
11 hours and 15 minutes (11.25)
Step-by-step explanation:
make a ratio
160:4.5
240/160=1.5
so 1 and 1/2 intervals of 4.5 hours 
4.5+4.5= 9
4.5/2=2.25
9+2.25=11.25