Answer:

Step-by-step explanation:
For this case we need to find the following integral:

And for this case we can use the substitution  from here we see that
 from here we see that  , and if we solve for x we got
, and if we solve for x we got  , so then we can rewrite the integral like this:
, so then we can rewrite the integral like this:

And if we distribute the exponents we have this:

Now we can do the integrals one by one:

And reordering the terms we have"

And rewriting in terms of x we got:

And that would be our final answer. 
 
        
             
        
        
        
Apples = $.30
Peaches = $.60
You can get this by setting up a system of equations that looks like this. 
2x + 3y = 1.65
3x + 2y = 1.60
Where x is the amount of apples and y is the number of peaches. Then you can solve using any of the methods (I would suggest elimination for ease). 
        
             
        
        
        
Answer:
10 times as much 
Step-by-step explanation:
the 2 in 82 is worth 2 ones while the 2 in 21 is worth 10 ones
 
        
                    
             
        
        
        
J:V = 3:2
3:2 x 40 = 120:80
J: 120-15 = 105
V:  80+15 = 95
J:V is now 105:95
The original amount of peas that Julia had at first was 120.