Try to understand this. Hope this help. Answer for 2 only.
 
        
        
        
Answer:
The markup percent on the painting is 58.3%
Step-by-step explanation:
Here, The Cost price of the painting = $120
The selling price of the painting = $190
Hence, the total profit on the painting = Cost Price - Selling price
or Profit =  $190  - $120 = $70
Now, Markup % =  (Gross Profit / cost)  x 100
⇒Markup % = 
Hence, the markup percent on the painting is 58.3%
 
        
             
        
        
        
I think they both increased by 3 and the new dimensions is 8 ft by 7 ft
        
                    
             
        
        
        
1 and 1/2 is the scale factor
        
                    
             
        
        
        
B - check your answers and present the solution