Respuesta :

So in order to figure this out we need to know the formula for simple interest
In this case it is. 
I = p r t  (they are all multiplied by each other) 

p = "principle" or the starting amount of money
r = the rate or percentage
t = time (in years)
So lets figure it out in the order they give it to us. Then Put them least to greatest. 

So the first one is 
Investment at $3,000 at 16% simple interest for 2 years. 
We multiply them all together to get our interest. 
lets do the math:) 
16% = 0.16 
$3,000 x 0.16 x 2 = $960

Now lets do the second one.
Investment of $3,000 at 5% simple interest for 20 years. 
Lets multiply them all together. 
5% = 0.05 
$3,000 x 0.05 x 20 = $3,000

Now for our third one. 
Investment of $1,000 at 16% simple interest for 20 years 
Lets multiply them together. 
16% = 0.16 
$1,000 x 0.16 x 20 = $3,200

Now here is our answer ↓↓↓

Now to put these in order from least to greatest. 
1st.) Investment at $3,000 at 16% simple interest for 2 years. = $960
2nd.) 
Investment of $3,000 at 5% simple interest for 20 years.= $3,000
3rd.)Investment of $1,000 at 16% simple interest for 20 years.= $3,200