Answer:
I can't seem to solve these but hope this information helps :)
Step-by-step explanation:
Remove any grouping symbol such as brackets and parentheses by multiplying factors.
Use the exponent rule to remove grouping if the terms are containing exponents.
Combine the like terms by addition or subtraction.
Combine the constants.
 
        
                    
             
        
        
        
Sam will need 30 rolls of 30 inches of paper
        
             
        
        
        
Answer:
11
Step-by-step explanation:
 
        
             
        
        
        
Answer:
t=1/2
Step-by-step explanation: