Answer:
I would say 49 is your answer
Step-by-step explanation:
53 plus 78 qould equal 131 
subtract 131 from 180 and you get 49 
add up all your numbers including x then they should all equal 180
 
        
             
        
        
        
Your answer is D. 
Trust me, I know
        
             
        
        
        
30 ÷ 6 represents a quotient.
30 is the dividend. 6 is the divisor. The quotient is 5. 
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5.2v represents a product of two factors.
5.2 and v are both factors. 
5.2 is the multiplicand and v is the multiplier.