Answer:
19.32
Step-by-step explanation:
 
        
             
        
        
        
Answer:
4c - 2
Step-by-step explanation:
Add up all the terms to find the perimeter.
2c + 2(c - 1)
2c + 2c - 2
4c - 2
Therefore, the perimeter is 4c - 2.
 
        
             
        
        
        
Answer:
$700
Step-by-step explanation:
25 the least amount of money earned by each student multiplied by 28 the number of students. 
 
        
             
        
        
        
A= 30ft, because you only have to multiply LxW= A that is equal to 2x15=30ft
        
             
        
        
        
No she's not correct,,,
If the teas are $50 to start with 20% up from $50 is $62.50
if she counts down 20% down from that it wouldn't be $50 but be $40.
So she would not break even.