60% 
Solve by creating a proportion
27/45 = x/100
Cross multiply to get 2700=45x
Divide 45 on both sides to get x=60
        
                    
             
        
        
        
X + (x + 2) + ( x + 4) + (x + 6) 
-----------------------------------     = 15
                   4
4x + 12 
---------    = 15
    4
Multiply by 4 on both sides
4x + 12 = 60
subtract 12 from both sides
4x = 48
divide by 4 on each side
x = 12
x + 2 = 14
x + 4 = 16
x + 6 = 18
        
             
        
        
        
Answer: D
Step-by-step explanation:
A seems complicated and doesn’t make an sense while D is simple
 
        
             
        
        
        
Answer:
Step-by-step explanation:
 
        
             
        
        
        
By definition, the volume of a sphere is given by:
 V = (4/3) * (pi) * (r ^ 3)
 where,
 r: radius of the sphere.
 Substituting we have:
 V = (4/3) * (pi) * ((3) ^ 3) = 113.08 in ^ 3
 answer
 the best estimate for the volume of air in the balloon in cubic inches is
 C. 113.1