LFX=AZQ
XLF=QAZ
FXL=ZQA
XFL=QZA
        
             
        
        
        
Answer:

or

Step-by-step explanation:
-7,-3,1,5,... is a arithmetic sequence.
Arithmetic sequences have a common difference. That is, it is going up by 4 each time.
When you see arithmetic sequence, you should think linear equation.
The point-slope form of a line is  .
.
m is the common difference, the slope.
Any they are using the point at x=1 in the point slope form.  So they are using (1,-7). 
So let's put this into our point-slope form:


Subtract 7 on both sides:

So your answer is 

 
        
             
        
        
        
Answer:
number 12 is the 5th one E
Step-by-step explanation:
...
 
        
             
        
        
        
29,028ft 5 and 1/2 miles About as big as 20 empire state buildings.