Answer:
44 swimmers
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
y=6x-27
Step-by-step explanation:
To find the slope of a line given 2 points; use this equation.

(5,3) (4,-3) 
 
    

slope = 6
as for y-intercept use this method in the attachment
   below 
 
        
             
        
        
        
Answer:
2 hours and 7 minutes
Step-by-step explanation:
 
        
             
        
        
        
Answer: A. 87 feet
Step-by-step explanation:
 1. You can find the t value of the vertex of the parabola as following:
 
 2. Substitute values:
 a=-16
 b=70
 Then:
   
 
 
 3. Substitute the vaue obtained into the equation given in the problem. Therefore, you obtain the following result:
 
 4. To the nearest foot:
 h=87 feet