Write a variable expression for each statement 9. six decreased by a number 12

10. the quotient of a number and

11. the product of five and a number increased by two

12. seven less than a number

13. four times the sum of ten and a number

14. twenty less a number

15. the difference of 10 and a number

16. the quotient of 14 and a number

17. a number increased by 17

18. half of 14

19. a number increased by 6

20. the product of x and 7