Answer: 105 kilometers
Step-by-step explanation:
1 kilometer=1,000 meters
15,000 (meters a day) x 7 (days a week) = 105,000 meters.
Convert the meters to kilometers: 
105,000/1,000 = 105 kilometers
 
        
             
        
        
        
If I’m correct negative one half
        
             
        
        
        
You can check the following 
C=4 
C=5
C=11
        
             
        
        
        
Answer:
 -1/8
Step-by-step explanation:
lim x approaches -6     (sqrt( 10-x) -4) / (x+6) 
Rationalize
    (sqrt( 10-x) -4)      (sqrt( 10-x) +4)
     ------------------- * -------------------
        (x+6)                 (sqrt( 10-x) +4)
We know ( a-b) (a+b) = a^2 -b^2
a= ( sqrt(10-x)   b = 4     
(10-x) -16
-------------------
 (x+6) (sqrt( 10-x) +4)    
-6-x
-------------------
 (x+6) (sqrt( 10-x) +4) 
Factor out -1 from the numerator
-1( x+6)
-------------------
 (x+6) (sqrt( 10-x) +4) 
Cancel x+6 from the numerator and denominator
-1
-------------------
 (sqrt( 10-x) +4) 
Now take the limit
lim x approaches -6    -1/ (sqrt( 10-x) +4)
                                       -1/ (sqrt( 10- -6) +4)
                                       -1/ (sqrt(16) +4)
                                       -1 /( 4+4)
                                         -1/8