6:42 pm bc subtract 2 hours is 12:12am and then subtract the rest is 7:12pm then you subract 12 minutes is 7 pm the subtract the 18 minutes left is 6:42 pm
        
                    
             
        
        
        
Answer: X equals B. 
Step-by-step explanation: all the degrees in a triangle add to be 180, so add up the given angles and subtract from 180 to get the missing angle.
 
        
                    
             
        
        
        
Given:
The vertex of a quadratic function is (4,-7).
To find:
The equation of the quadratic function.
Solution:
The vertex form of a quadratic function is:
 ...(i)
          ...(i)
Where a is a constant and (h,k) is vertex.
The vertex is at point (4,-7). 
Putting h=4 and k=-7 in (i), we get


The required equation of the quadratic function is  where, a is a constant.
 where, a is a constant.
Putting a=1, we get

 
             ![[\because (a-b)^2=a^2-2ab+b^2]](https://tex.z-dn.net/?f=%5B%5Cbecause%20%28a-b%29%5E2%3Da%5E2-2ab%2Bb%5E2%5D)
 
 
Therefore, the required quadratic function is  .
.
 
        
             
        
        
        
Simple, use PEMDAS and then do your simple  math and then your answer should be 86922.56604