The train Chug-a-Lug must be going 153.5 miles to match the same speed as Old Steamy so they can arrive at the station at the same time.
        
             
        
        
        
A half-life of the isotope is 15 days and at start its mass is 32 g.
A table:
              t:                 m:
              0                32 g
             15               16 g
             30                 8 g
             45                 4 g
             60                 2 g
             75                 1 g
In the first column is used an arithmetic sequence ( a 1 = 0, d = 15 ).
In the second column is used a geometric sequence ( a 1 = 32, r = 1/2 )                       
        
             
        
        
        
Answer:jurrhthrhth
Step-by-step explanation:hdhdbbdfh
 
        
                    
             
        
        
        
Hello, 
we must multiply the number of pages by the number of cards that hold each page to find the total number of card that she can organize, so:
5*18=90
She can organize 90 cards, but she has 95, then SHE DOESN'T HAVE ENOUGHT PAGES TO ORGANIZE THEM.