Which description represents the expression 5 x−95 x−9 ?

1. 9 is subtracted from the product of 5 and a number
   
   
2. 9 is subtracted from the sum of 5 and a number
   
   
3. 5 times the difference of a number and 9
   
   
4. 9 more than the product of 5 and a number