1. A 1.0 minute
Range can be calculated by subtracting 3.0 mins - 2.0 mins = 1.0 minute.
2. D. 4
Joel was faster than Gunner in meets 1, 2, 3 and 4.
3. B. 1.75 minutes
Gunner has consistent improvement at intervals of 0.25 minutes per meet. Subtracting 2.0 mins by 0.25 mins we get 1.75 minutes. 
        
                    
             
        
        
        
Answer:
- 12x +9y ≥ 510
- y ≤ 2x
- y ≥ 25
Step-by-step explanation:
Phoebe earns 12x for her yard weeding, and Richie earns 9y for his dog walking. They want the sum of these earnings to be at least 510, so the first constraint inequality is ...
   12x +9y ≥ 510
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Richie plans to walk no more than 2x dogs, since y is the number of dogs he walks, the second constraint is ...
   y ≤ 2x
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Richie will walk at least 25 dogs, so ...
   y ≥ 25
 
        
                    
             
        
        
        
The answer is -16 radical 3
        
             
        
        
        
Answer:
equation A
Step-by-step explanation:
 
        
             
        
        
        
To check if this point lies on the line, plug in a 2 for x and a y for 1 and solve
x+2y=5
2+2(1)=5
4=5
Since this statement isn't true, then the point doesn't lie on the line
Hope this helps