Answer:
 Amount = p( 1+r/100) ^n
 = 12000 ( 1+10/100) ²
= 12000( 10/10+1/10) ²
 = 12000( 11/10) ²
 = 12000 x 11/10 x 11/10 
= 14520 rs. 
Compund interest = amount - principal
 = 14520 - 12000 
 = 2520rs. 
Next question :- no of men can complete a piece of work in 7 days = 36 
No of men can complete a piece of work in 42 day = ( 36 x 7 ) ÷ 42 
 = 252 ÷ 42
= 6 men
 
        
             
        
        
        
Answer:     b
Step-by-step explanation:
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Answer:
y=3x+5 
Step-by-step explanation: