Answer:
(0,4)
Step-by-step explanation:
f(x)=4-5x
4-5(0)
5(0)=0
4-0=4
 
        
             
        
        
        
Answer:
10 minutes?
Step-by-step explanation:
Sorry if it is incorrect but what I did was I found the average of 5 minutes and 15 minutes and got 10.
Here's my problem solving explanation:
(5 + 15) / 2 = 10
 
        
                    
             
        
        
        
 The midpoint of the points ( 4, 5.5 ) and ( 4, 10.5 ) is the center of the circle:
 C =

 C = ( 4, 8 ),  h=4, k=8
 r =

 r = 2.5
 The equation of the circle in standard form:
 ( x - h )² + ( y - k )² = r² 
( x - 4 )² + ( y - 8 ) = 6.25