Respuesta :

jnxox999
the answer is D.22 because i took 0.5 x 21 to get 10.5. So all you gotta do is add 21 and 23 to get 24. 24x0.5 is 22
themaxspaulding

Answer: C. 21.5

Step-by-step explanation:

                  i know that this is right I did math   :)