Sum of n terms in a geometric progression is given by Sn = a1 (1 - r^n) / (1 -r)
3( 1 - 4^6) / (1-4)
= 4,095
        
             
        
        
        
Answer:
1) (n+5)(n-1)
2) (n-4)(n+3)
3) (v-4)(v-1)
4) (p-4)(p+2)
5)(7x-10)(x+1)
6)(7n-1)(n-9)
Step-by-step explanation:
1) Factors of -5 that add up to 4
2) Factors of --12 that add up to -1
3) Factors of 4 that add up to -5
4) Factors of -5 that add up to 4
5) 7 -3x-10
-3x-10
     7 +7x-10x-10
+7x-10x-10
    7x(x+1)-10(x+1)
    (7x-10)(x+1)
6)7 -64n+9
-64n+9
     7 -63n-n+9
-63n-n+9
      7n(n-9)-(n-9)
      (7n-1)(n-9)    
 
        
             
        
        
        
The probability that it doesn't land on 4 would be 3/8. This is because theres a 5/8 chance it lands on 4 so just do the opposite which would be 3/8. 
        
             
        
        
        
The percent markup is 62.5%
The work is provided in the image attached.