Maybe let's just do the prime factorization.
40=2x2x2x5
answer:2^3x5
 
        
             
        
        
        
I hope this helps you 
slope=y2-y1/x2-x1
slope= -3-(-4)/0-2
slope=-3+4/-2
slope= -1/2
        
                    
             
        
        
        
Answer:
2x - 5
Step-by-step explanation:
1/5(10x - 25)
Use the Distrubitve Property
1/5 * 10x = 2x
1/5 * 25 = 5
New equation is 2x - 5
 
        
             
        
        
        
Answer:
B. 15
Step-by-step explanation:
Prime factors of 15 is 3 and 5
sum of 3 and 5 is 8