I think the. answer is 511.2
        
             
        
        
        
Answer:
100 yrs old
Step-by-step explanation:
20 times 5
 
        
                    
             
        
        
        
Answer:
Mistake in step 3
Step-by-step explanation:
3^16/3^-8 should simplify to 3^24 not 3^8
 
        
                    
             
        
        
        
 75% of the teachers were first-year teachers
Step-by-step explanation:
the formula for percentage will be used for the problem
The percentage is given by:

Here
Total teachers = 57+19 = 76
First-year teachers = 57
So,

Hence, 75% of the teachers were first-year teachers
Keywords: Percentage, Percent
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