Question

Help asap pls, this is due in 30 minutes.

Answer 1

The other boy has a good answer

Answer 2

I'm not sure sorry

Step-by-step explanation:

all I know is calcium=1 carbon=1 oxygen=3➡️calcuim=1 oxygen=1+carbon=1 oxygen=2

so overall answer would be (5➡️2+3) so mabey 5+5=10