Well.. .not exactly what you're asking, but the relationship of them is 

so... hmm to add some
for example  let's say   
 
 
        
        
        
Step-by-step explanation:
The answer is mentioned above.
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
This is a differential equation problem most easily solved with an exponential decay equation of the form
 . We know that the initial amount of salt in the tank is 28 pounds, so
. We know that the initial amount of salt in the tank is 28 pounds, so 
C = 28. Now we just need to find k.
The concentration of salt changes as the pure water flows in and the salt water flows out. So the change in concentration, where y is the concentration of salt in the tank, is  . Thus, the change in the concentration of salt is found in
. Thus, the change in the concentration of salt is found in
 inflow of salt - outflow of salt
 inflow of salt - outflow of salt
Pure water, what is flowing into the tank, has no salt in it at all; and since we don't know how much salt is leaving (our unknown, basically), the outflow at 3 gal/min is 3 times the amount of salt leaving out of the 400 gallons of salt water at time t:

Therefore, 
 or just
 or just
 and in terms of time,
 and in terms of time,

Thus, our equation is
 and filling in 16 for the number of minutes in t:
 and filling in 16 for the number of minutes in t:
y = 24.834 pounds of salt
 
        
             
        
        
        
Answer is D.
When you have an exponent that is a fraction, the denominator is the number you root the base by. In this case the exponent is 3/5, so you fifth root 13 cubed.
        
             
        
        
        
(-2,2) 
i just did my homework with the same question