Respuesta :
Answer:
It’s actually m = (C - 12) /3 But I don’t see it in the 4 option you have.
Step-by-step explanation:
C = 12+ am
C - 12 = am
(C - 12) /a = m
Answer:
beside in this equation where C=$12 a= the additional charges and m= minutes used the equation would be C m=C-12a