I can answer without knowing how many coins you are tossing
Answer:
Im not a 100% sure but my best guess would be the 3rd equation:
f(x) = (x - 1) (x + 3)
Please let me know if I was wrong, but i hope this helped you!
In the division problem, 0.08 ÷ 2 = 0.04, the dividend is 0.08.