Answer:
(-6127) + 0 = (-6127)
(+18) + 2 = (+20)
(+27) - 7 = (+20)
(+63) + (-13) = (+50)
(+21) - 4 = (+17)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Number of photos = 3 * minutes
Step-by-step explanation:
 
        
             
        
        
        
Answer:
√14 and √42. hope this helps.
 
        
             
        
        
        
Answer:
1)	n^2 – 3 n + 8   4^2 – 3*4 + 8 = 12    
2)    (x^2 – 4 y) / 2      (16 + 12) / 2 = 14
3)	4 * |-7 – 2| = 4 * 9 = 36     Abs -9 = 9  
4)	19 – x^2 = 19 – 25 = -6     (-5)^2 = 25
5)	S^2 t – 10 = -8^2 * ¾ -10 = 64 * ¾ - 10 = 38
6)	4 p^2 + 7 q^3 = 4 * 9 + 7 * (-8) =  - 20      (-2)^3 = -8
 
        
             
        
        
        
12.	Since there is no table given I will assume that what you want me to do is to show that Unit rate of Brandon’s biking.
SO here are the data that we need:
=> 8 and ½ miles = 8.5 miles
=> ½ hour = .5 hours or 30 minutes
Now, let’s solve for the unit rate
=> SO in every 30 minutes he bikes around 8.5 miles
=> Since 1 hour is equals to 30 minutes, simply multiply 8.5 by 2
=> 8.5 * 2 = 17miles
=> 17 miles / hour