Enrique has $50 in his lunch account and spends $5 per day from the account. Maya has $46 in her lunch account and spends $4 per day from the account. Which equations model the situation? Do not for get to show your work

a.) 50 – 5x = y and 46 – 4x = y
b.) 5x + 50 = y and 4x + 46 = y
c.) 5x – 50 = y and 4x – 46 = y
d.) 5 – 50x = y and 4 – 46x = y