Answer:
A. 
Step-by-step explanation:
He already had 100 into the account so we add that, 25x is derived from the fact that x=the amount of months and 25 is the amount per a month he saves. 
 
        
                    
             
        
        
        
K, you have 2 minutes, one minute for one kilometer.
If you're in 60km/h, you're on 1km/m, so, if you cover 1 km in one minute, you need to stay in that speed to get to the train station. 
        
             
        
        
        
Answer:
   the first selection is so shaded
Step-by-step explanation:
Each strip is divided into 10 parts. 1/5 will be represented by 2 of those parts, so 2/5 will be represented by 4 of the 10 parts. The 3/10 used on the other gift will be represented by 3 additional parts. So, a total of 7 of the 10 parts of the strip need to be colored to represent the ribbon used.
 
        
             
        
        
        
Um idk sorry lol that’s way to hard for me
        
             
        
        
        
Answer:
$840
Step-by-step explanation:
4 weeks = 28 days
28 x 30 = 840