here is your answer. i think i did it right. 
 
        
             
        
        
        
Answer
12x+40
Step-by-step explanation:
when distributing, you have to multiply all numbers in the parentheses by the variable outside the parentheses
 
        
                    
             
        
        
        
Answer:
41.472 m²
8.449m²
Step-by-step explanation:
c) scale facot is 7.2/5 = 1.44
the square scale factor is 1.44^2 = 2.0736
times 20 by this to get the area
2.0737x 20 = 41.472 m²
d) 2.8/6 = SF = 0.467
0.2178 x 38.8 = 8.449m²
 
        
             
        
        
        
Answer:
$82.5
Step-by-step explanation:
$16.50 * 5 = $82.5