Hello i am new here how are you doing
        
             
        
        
        
Sum means u add the two numbers together
38 + 27 = 65
        
             
        
        
        
Total time used= 15+45+30=90 mins
Initial time=7:45
final time will be 1 hr 30 mins more than initial Time
final time= 9:15 am 
 
        
             
        
        
        
49=-7k is equivalent to D because when you simplify both of them, you get -7=k
        
             
        
        
        
In the hundreds place the tend place and the ones place. hopes this helps?!