First equation is
v=-3 
And the second equation is 
v=6
If together it is 
v=-3,6
        
             
        
        
        
Answer:
$12
Step-by-step explanation:
amount of tax = $0.72
percent of tax= 6%
Let the original cost be x
so that
6% of x= 0.72
solve for x
6/100*x= 0.72
0.06x= 0.72
divide both sides by 0.06
x= 0.72/0.06
x=$12
Hence the cost is $12
 
        
             
        
        
        
Answer:
5 * 3 * 2
Step-by-step explanation:
30
15 * 2
5 * 3 * 2
 
        
                    
             
        
        
        
A ton is 2,000 pounds so multiply 2,000 x 18
2,000 x 18 =  36,000 pounds, now add the 42 pounds to the 36,000
36,000 + 42 = 36,042 pounds. Now divide 36,042 by 3
36,042 ÷ 3 = 12,014 
Your answer is 12,014 pounds
If you need your answer in tons it's 6.007 tons
Calculations for pounds to tons
12,014 ÷ 2,000 = 6.007
Hope this helps. :)