Answer :

Answer:

13 8x+6

14 11x+20

15 4x+20

16 11x+8y

17 5x+3y+18

figure the rest out yourself

itachi490
18. 7x + 15y + 30
19. 7x + 7y
20. 5x + 10y + 33
21. 2x + 7y + 37
22. 9x + 7y + 9