Answer: 
3/4 hour or 45 minutes
It will take 0.75 hours or 45 minutes or 2700 seconds to paint one wall according to the rate we're given. 
:)
 
        
                    
             
        
        
        
Answer:
300 in³
Step-by-step explanation:
By definition, volume of a pyramid,
 = (Base Area x height ) / 3
= (90 x 10) / 3
= 900/3
= 300 in³
 
        
             
        
        
        
8/2.79 = 1/2.867, or $2.86 per each oz
15/5.54 = 2.707/1, or 2 oz for every 1 dollar
the 15 oz jar of salsa has the better unit rate
hope this helps
        
             
        
        
        
Answer:
146 square meters
Step-by-step explanation:
We can split the figure into a 6 by 15 rectangle and a parallelogram (8 base, 7 height). 
- The area of the rectangle is 6•15=90
- The area of the parallelogram is 8•7=56
- 90+56=146