It's 24k-6
By order of operations, you do the multiplication first: 3k(4) = 12k
12k-6+12k now combine like terms
24k-6
Hope that helps
        
             
        
        
        
Answer:
$15
Step-by-step explanation:
60x75%
60x0.75
45
60-45=15
 
        
             
        
        
        
Answer:

Step-by-step explanation:
Given
Tower one = 15.6 cm 
Tower two = 18.3 cm
Tower 3 = 13.9 cm. 
Required:
Height of the 4th tower
Represent a cube by X; a cylinder by Y and a hexagonal prism by Z
Tower one, a cube with a hexagonal prism = X + Z = 15.6
Tower two, a cube with a cylinder = X + Y = 18.3
Tower 3, a hexagonal prism with a cylinder = Z + Y = 13.9
 ----- Equation 1
 ----- Equation 1
 ----- Equation 2
 ----- Equation 2
 ----- Equation 3
 ----- Equation 3
Subtract equation 1 from 2



 ---- Equation 4
 ---- Equation 4
Add Equation 4 to Equation 3

 
 


Divide both sides by 2



Substitute  in Equation 2 and 3
 in Equation 2 and 3
 ----- Equation 2
 ----- Equation 2

Subtract 8.3 from both sides



 ----- Equation 3
 ----- Equation 3

Subtract 8.3 from both sides



So, we have that 



The question states that the 4th tower is made up of the three shapes;
This implies that;



The height of the 4th tower is 23.9cm
 
        
             
        
        
        
Answer:
Do in calculator simple answer