D. $250
If she has $20 on week 8, and $30 on week 12, then on week 100 she'll have $250. because 20 divided by 8 equals 2.5 same as 30 divided by 12 equals 2.5. So you multiply 100 by 2.5 and get 250.
        
                    
             
        
        
        
The answer is traffic flow. 
An ordinary hindering traffic law says: No individual should drive upon an interstate at such an ease back speed as to obstruct or hinder the typical and sensible development of the movement, aside from when decreased speed is essential for a safe task, on account of a review, or consistence with the law.
        
             
        
        
        
Answer:
Seven is the correct answer. 
Explanation: