Use the Intermediate Value Theorem to show that the following function has a zero in the given interval. Approximate the zero correct to two decimal plac f(x)=3x+9x-9x+9; [-4,-3] Select the correct choice below and, if necessary, fill in the answer box to complete your choice. OA. The polynomial has a real zero on the given interval because f(-4)= |>0 and f(-3)= (Type integers or decimals.)