Answer:
The answer is 10.5
Step-by-step explanation:
 
        
             
        
        
        
Find his rate:
 120 / 15 = $8 per hour
Multiply the rate by hours:
$8 x 20 hours = $160
He will earn $160
 
        
             
        
        
        
Changing the subject of the formula
 
        
        
        
 The answer is 63.53 subtracts 5.23 from 68.76
        
                    
             
        
        
        
Answer:
40
Step-by-step explanation:
The range is the difference between the largest value and the smallest value in the data set.
minimum value = 21 and maximum value = 61
range = 61 - 21 = 40