Answer:
=4x2+12x+9
hope it helps you!
Step-by-step explanation:
 
        
                    
             
        
        
        
Dave jogged for 9 minuets and walked for 12 minuets
        
             
        
        
        
Answer:
21.78 meters
Step-by-step explanation:
Divide 326.7/15
 
        
             
        
        
        
A circle is a collection of points all of which are on the circumference of the circle.  If you use algebra and (x-h)^2 + (y-k)^2 = r^2 and the info contained in the coordinates (x,y) of each city, you can find h, k and r.  Then r is the (equal) distance between each city and the center of the circle, where the new tower will be built.