Answer:
IT IS C I BET YOU 6 AND 8
Step-by-step explanation:
 
        
             
        
        
        
Slope intercept form is y=mx+b
y=-x+700
        
                    
             
        
        
        
Answer: 268.1
Step-by-step explanation:
V = (4/3) 3.14 (4) to the power of 3
 
        
             
        
        
        
Answer:
315 sq. in
Step-by-step explanation:
15 * 21 = 315
 
        
             
        
        
        
Answer:
15-29= -14
(I need the explanation most importantly)
14+(-4) - 8 =10-8=2
(Explanation please)
-8.4 - (19.5.) = - 27.9, (just add them to each other and write -, because both have - in front of them) 
(Explanation) 
-15 + 8 - (-19.7) = - 7+19,7=12,7 (there is + and - so it will became - 7, and at next there is two - which will turn them into +) 
(Explanation) 
29.45 - 56.009 - 78.2=−104,759 (all you have to is to put them all together, and than make it 29.45 less, writing - in front of them) 
(Explanation) 
LAST ONE 
45.9 - (-9.2) + 5= 45.9+9.2+5=55.1+5=60.1 (because when there is 2 minus next to each other it will became plus)