Answer:
1: 0
2: 2
3: 8
4: 0
5: -19
6: 6
7: -9
8: -4
9: 10
10: 1
11: -9
12: 20
13: -29
14: 17
15: 29
16: 29
Step-by-step explanation:
They are all in order.
 
        
                    
             
        
        
        
(r - s)³ + r²
= (-3 - (-4))³ + (-3)²
= (-3 + 4)³ + 9
= 1³ + 9
= 1 + 9
= 10
        
             
        
        
        
Answer: erm... the vertex it (1,-9)
Step-by-step explanation:
i think i did it right....not good at this stuff
 
        
                    
             
        
        
        
For this problem you can create a proportion.
Since 31,100 copies is 7.8% of the total copies spoke up to date you can make this proportion: 
31,100. 7.8%
——— =. ———
 x. 100%
Now you cross multiply and you will get 
7.8x=3,110,000
After this you solve for x by isolating the variable. 
7.8x/7.8. 3,110,000/7.8
x=398,717.949
Since the question asks you to round to the nearest whole number which is 7 then the final answer would be 398,718
 Answer: There has been 398,718 copies sold to date.