Answer:
a) 160 minutes per day
b) Find the graph attached 
c) on 10th week Maria would be walking  2560 minutes per day 
Step-by-step explanation:
Week 1 - 5 minutes per day 
Week 2 - 10 minutes per day
Week 3 - 20 minutes per day
Week 4 - 40 minutes per day
Week 5 - 80 minutes per day
Week 6 - 160 minutes per day
a) 160 minutes per day
b) Find the graph attached 
c) on 10th week Maria would be walking  2560 minutes per day 
 
        
             
        
        
        
Divide 1681 by 4 which is about 420.25 feet for length
        
                    
             
        
        
        
THE CORRECT ANSWER IS A=12 OVER X
        
             
        
        
        
Answer:
y<=-(1)/(5)x+1 
Step-by-step explanation: