Answer:
h= 7.5
Step-by-step explanation:
 8h=60 
One solution was found :
                   h = 15/2 = 7.500
Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
                     8*h-(60)=0 
Step by step solution :
Step  1  :
Pulling out like terms :
 1.1     Pull out like factors :
   8h - 60  =   4 • (2h - 15) 
Equation at the end of step  1  :
Step  2  :
Equations which are never true :
 2.1      Solve :    4   =  0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation :
 2.2      Solve  :    2h-15 = 0 
 Add  15  to both sides of the equation : 
                      2h = 15
Divide both sides of the equation by 2:
                     h = 15/2 = 7.500
One solution was found :
                   h = 15/2 = 7.500
Processing ends successfully
 
        
                    
             
        
        
        
<span><span>A = P(1-r)^t 
</span><span>
A = 3900(1-0.08)^10 
A = 3900(0.92)^10 </span></span><span><span>
A = 3900(0.434388454) 
A = 1694.11
1694 square km</span></span>