Answer:
   0.56 milligrams
Step-by-step explanation:
Put 6 where t is and do the arithmetic.
   M(6) = 50·e^(-0.75·6) = 50·e^-4.5 ≈ 0.56 . . . . milligrams
 
        
             
        
        
        
Answer:
10 dollars 
Step-by-step explanation:
Hope this helped :D 
 
        
                    
             
        
        
        
250milliliters
explanation: divide 500/2 since there is only half in the small bottle