Answer:
No solutions
Step-by-step explanation:
18-30w=20-10w-20w
18-30w=20-30w
18-20=30w-30w
-2 does not equal to 0
No solutions
 
        
             
        
        
        
Answer:
There would be $2,120
Step-by-step explanation:
First figure out what 3% of 2000 is which is 60. Multiply the 60 by 2 to get 120 then add 120 to 2000
 
        
                    
             
        
        
        
Answer:
Gianna makes $18 per hour.
Step-by-step explanation:
Given Gianna makes 90$ for 5 hours. That means she should make  $  = 18$ every hour.
 $  = 18$ every hour.
Therefore we have:
a.
HOURS                    DOLLARS
   1                                   18
   2                                  36
   3                                  54
   4                                   72
   5                                   90
   6                                   108
   7                                   126
b.
For the tabular column mark Hours on the x - axis and Dollars on the Y - axis. It can be plotted from the above table easily.
c.
If Gianna works for 8 hours she would have made 8 X 18 = 144$.
So, she will earn 144$ in 8 hours.
d.
To make 60$ she would have to work  hours = 3.33 hours.
 hours = 3.33 hours. 
 
        
             
        
        
        
Answer:
First term (a) =8
Common difference (d)= t2-t1
 =12-8
 =4
Now, sum of first 31th term (tn31) =n/2{2a+(n-1)d}
  = 31/2{2×8+(31-1)4}
 =31/2{16+(30×4)
 =31/2(16+120)
 =31/2×126
 =31×63
Step-by-step explanation:
Similarly use 19 as (n) for the 19th term