Answer:
Average rate of change uses the slope formula (AKA rise over run AKA change in y over change in x AKA y2-y1 over x2-x1). To find y2 and y1, plug the x-values from your interval end points into the function f(x). Say f(1) and f(a). i really hope that helps 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
A = 97.968 cm^2 = 98.0 cm^2
Step-by-step explanation:
A = (78/360)*3.14*12^2
A = (78/360) * 3.14 * 144
A = (78/360) * 452.16
 
        
                    
             
        
        
        
Answer:
B) 5√3
Step-by-step explanation:
 
        
             
        
        
        
6/7 because 48 divided by 8 is 6 and 56 divided by 8 is 7
        
                    
             
        
        
        
Answer:
l = -16/3   m = 80/3
Step-by-step explanation:
see attached for step by step