Answer: 70
Step-by-step explanation:
I think 
 
        
                    
             
        
        
        
Answer:
80.66
Step-by-step explanation:


Since we have three variables,



Therefore:

Using the above:
f(4.02, 3.99, 6.97) =81+ 8(4.02 - 4) + 8 (3.99 - 4) +14(6.97-7)=80.66.
The approximation of   is 80.66000.
 is 80.66000.
 
        
             
        
        
        
The answer is negative-48
        
             
        
        
        
Answer:
Width of the archway at its base: 11 units, height of the archway at its highest point: 30.25 units.
Step-by-step explanation:
The graph that represents the equation  is now sketched with the help of a graphing tool and whose representation is included in a file attached below. The point associated with x-intercepts are (-3, 0) and (8, 0) and the point associated with the highest point is (2.5, 30.25). The width of the archway at its base (
 is now sketched with the help of a graphing tool and whose representation is included in a file attached below. The point associated with x-intercepts are (-3, 0) and (8, 0) and the point associated with the highest point is (2.5, 30.25). The width of the archway at its base ( ) and the height of the archway at its highest point (
) and the height of the archway at its highest point ( ) are, respectively:
) are, respectively:



Width of the archway at its base: 11 units, height of the archway at its highest point: 30.25 units.