Answer:
He must start his journey by 11 AM 
Step-by-step explanation:
Speed of Toshi while walking up the mountains is 1.5 kilometres per hour
Speed of Toshi while walking down  the mountains = 2 * Speed of Toshi while walking up the mountains = 3 kilometres per hour
Time taken to travel 9 Km in the upward direction by Toshi = 9 Km/1.5 kilometres per hour = 6 hours
Time taken to travel 9 Km in the downward direction by Toshi = 9 Km/3 kilometres per hour = 3 hours 
He will take total 6 hours + 3 hours = 9 hours to travel 18 Km distance
Thus, He must start his journey by 11 AM 
 
        
             
        
        
        
Any point on the x-axis beyond the point (4, 0) is a possible cordinate of R.
        
             
        
        
        
What you want to do is find the comon demominator and than go from rhere pluse you should be able to go and look back at the lesson if you dont get ut well its like that for me
        
             
        
        
        
Answer:
$5.04
Step-by-step explanation:
Take the cost of one candle and multiply the number of candles desired
6 *.84 =5.04