Answer:
answer what???
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
6.7 units
Step-by-step explanation:
The distance between two points can be found using the formula below:

Thus, distance between (-1, 2) and (2, -4)
![=  \sqrt{( - 4 - 2)^{2} +  { [2-(-1) ]}^{2}  }](https://tex.z-dn.net/?f=%20%3D%20%20%5Csqrt%7B%28%20-%204%20-%202%29%5E%7B2%7D%20%2B%20%20%7B%20%5B2-%28-1%29%20%5D%7D%5E%7B2%7D%20%20%7D%20)



= 6.7 units (nearest tenth)
Additional:
For a similar question on distance between points, do check out the following!
 
        
             
        
        
        
the equation for compound interest is

we will see if it doubles or not
if t=1, we get A=P(1+r)
if t=2, we get A=P(1+r)^2
2(P(1+r))=P(1+r)^2 ?
2(1+r)=(1+r)^2 ?
2+r=r^2+2r+1
etc
when r=-1.618 or 0.618, then it doubles, but not when r is different things
not always
so no, it does not always double the amount of interest earned