8.6 would be in one but you could round your answer to 9 or just keep it that way
        
             
        
        
        
Answer:
12th ...
Step-by-step explanation:
4v (3)
=4v × 3 = 12v
 
        
             
        
        
        
        
We can subsitute since
23x+4=y and
4-2x=y
therefor
23x+4=y=4-2x
so
23x+4=4-2x
minus 4 on both sides
23x=-2x
add 2x to both sides
25x=0
divide both sides by... uh oh
I guess x=0
sub 
4-2(0)=y
4-0=y
4=y
the solution is (0,4)
        
             
        
        
        
Answer: 3.5 years
Step-by-step explanation:  Let A be the salaries earned from company A for x years and B for company B for the same years.
A = 31000 + n*3000
B = 38000 + n*1000
To find the case where A = b, set them to each other and solve for n, the number of years.
31000 + n*3000 = 38000 + n*1000
2000n = 7000
n = (7000/2000) = 3.5 years.
 A	B
0	31000	38000
1	34000	39000
2	37000	40000
3	40000	41000
4	43000	42000
5	46000	43000
6	49000	44000
7	52000	45000