Equilateral- all sides are the same
        
             
        
        
        
Answer see attached form:
 
        
        
        
Answer:
Option A)

Step-by-step explanation:
We are given the following in the question:
Cost of orange/black shirt = $15
Cost of black/white shirt = $10
Amount of money to be raised is atleast $1000.
Let x be the amount of orange/black shirt and y be the amount of  black/white shirt.
Thus, we can write the inequality:

That is the total cost of orange/black shirt and black/white shirt should be greater than or equal to $1000.
Thus, the correct answer is 
Option A)

 
        
             
        
        
        
42 firefighters in total.
16 volunteered for the special rescue team.
n + 16 = 42
or it could be this way:
42 - 16 = n
        
             
        
        
        
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