You need to move the decimal point to be at 1.
Since this is a decimal, the power will be negative. 
I had to move the decimal 6 places.
So,
1^-6
I hope this helps!
~kaikers
        
             
        
        
        
17/2 = 8.5 hours per week
8.5 x 5 = 42.5 hours in 5 weeks
 
        
             
        
        
        
1600<2570-125.5x<2000  subtract 2570 from all terms...
-970<-125.5x<-570  divide all terms by -125.5 (and reverse signs because of division by a negative!)
 
7.73>x>4.54  and x is months since January, and since months can only be integers...
x=[5,7]
So January + 5, 6, and 7 respectively are the three months that satisfy the equation...
June, July, and August.