Final answer:
The equation representing the number of chocolates remaining in the box t days after Zoe's birthday is C = C0 - 4*t.
Step-by-step explanation:
To write an equation for C, in terms of t, representing the number of chocolates remaining in the box t days after Zoe's birthday, we can use the information given in the question.
We know that Zoe ate 4 chocolates each night for 3 nights, and after 3 nights, there were 12 chocolates remaining in the box.
Let's assume that the initial number of chocolates in the box was C0.
After 3 nights, Zoe ate 4 chocolates each night, so she ate a total of 4*3 = 12 chocolates.
Therefore, the equation for C, in terms of t, is C = C0 - 4*t.