Answer:
c
you subtract the exponents when dividing numbers with the same base
 
        
             
        
        
        
60 / 2 = 30
30 * 5 = 150
he had $150 at first
60, the amount he was left with was 2/5 or 40% of his original amount
 
        
             
        
        
        
y=-2x+5 since b is the y intercept so it is 5 and it is a negative slope so 2/-1 is -2
 
        
             
        
        
        
47 square units is the answer on edge
        
             
        
        
        
To write a percent as a decimal- move the decimal point two places to the left and divide by 100.
Explanation:
Lets take an example.
We have to convert 25% into decimals. 
So, we will divide 25 by 100 , 
Here, we can see that we have moved the decimal to two places on the left side.