Answer:
1. Area=225 m2, 2. Carpet required is 225m2. 3. Cost= Rs 18000
Step-by-step explanation:
1.  Area=l*l=15*15=225 m2
2. Carpet has to be 225m2 in order to cover the floor
3. Cost= 225*80=18000
 
        
             
        
        
        
Answer:
Yes, the price is proportionate. Every rose cost 3 dollars. 
Step-by-step explanation:
1 rose * 3 dollars = 3
3 rose * 3 dollars = 9
6 rose * 3 dollars = 18
9 rose * 3 dollars = 27
12 rose * 3 dollars = 36
15 rose * 3 dollars = 45
Equation
R*3=P
OR
Number of roses* 3 dollars per rose = Prices (Dollars)
 
        
             
        
        
        
Y = kx
72 = k*3
73/3 = k
24 = k
y = 24x
        
             
        
        
        
Answer:
depends on the number... using a variable it would be 1/2n+15
Step-by-step explanation:
It's easy. Half of a number would be dividing it in half then adding 15.