Respuesta :

D. You subtract 9 from both sides and you have: h<11 . 10<11
gastondagan

Answer:

D.10

Step-by-step explanation:

if you just add the other numbers in place of variable h

13+9=22

12+9=21

11+9=20

10+9=19

only one addition problem adds up to a sum below 20 that being 10 so the answer is D