X equals to 48
The work is shown in the picture. I hope this helps.
 
        
        
        
Answer:
the common differnence is positive 3
Step-by-step explanation:
its going back by 3 since its going back to 0 its positive
 
        
                    
             
        
        
        
Answer: Total cost is $1.75
Explanation:
Since we have given that 
Number of postcards bought by Doug's family= 7
Cost of each postcard including tax = $0.25
Total cost is given by

Now, we want to show this in number line :
On the number line put all the number with a difference of 0.25 and run the number line seven times and we get the answer.
Each step is of length 0.25 and there are 7 jumps to reach required answer.
So, after 7 jumps we reach at 1.75 which is the required answer.
Hence total cost is $1.75
 
        
             
        
        
        
Answer:
Skewed to the right
Step-by-step explanation:
i bet your in 6 or 7 grade