Answer
speed : metres per second (a)
perimeter : meters (b)
volume : cubic centimetres (d)
area : square metres (c)
 
        
             
        
        
        
Answer:
10x - 3
Step-by-step explanation:
First, distribute 2 to all terms within the second parenthesis: 
2(3x + 1) = (2 * 3x) + (2 * 1) = 6x + 2
4x - 5 + 6x + 2
Combine like terms (terms with the same amount of variables). 
4x + 6x + 2 - 5
(4x + 6x) + (2 - 5)
10x + (-3)
10x - 3
10x - 3 is your answer.
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Answer:
7 is the answer you're looking for
 
        
             
        
        
        
The answer is the letter c. 3