Answer:
348 square feet.
Step-by-step explanation:
Area is the sides of a shape multiplied.
29x12=348 
The answer is 348 square feet. 
 
        
             
        
        
        
Answer:
1. 75%
2. 20%
3. 20%
4. decrease 5.4%
Step-by-step explanation:
1. 119-68=51, 51/68=0.75
2. 30-24=6, 6/30=0.20
3. 18-15=3, 3/15=0.20
4. 762-721=41, 41/762=0.0538
 
        
             
        
        
        
Answer: multiply 10 to both terms and subrtact products
Step-by-step explanation:
10(5 - 2x)
multipy 10 to both terms
50  20x
subtract products
50 - 20x
 
        
                    
             
        
        
        
Step-by-step explanation:
if 70% of the orice is 420 then 
70x = 100 × 420
70x = 42000
x = 42000/70
x = 600
 
        
             
        
        
        
Answer:
1. 6/15, 0.4, 40%
2. 0.15, 15%
3. 18 green marbles
Step-by-step explanation: