听力原文:M: I haven't heard from my family since last month. W: Don't worry, Bill. Overseas mail is often slow. Q: What can we lean about the man from the conversation? (18)
【单选题】The trend for monthly sales ($Y) is related to the month (t) by the equation Y = 1,500 – 3t where t = 1 in the first month of 20X8. What are the forecast sales (to the nearest dollar) for the first mo...
【单选题】The trend for monthly sales ($Y) is related to the month (t) by the equation Y = 1,500 – 3t where t = 1 in the first month of 20X8. What are the forecast sales (to the nearest dollar) for the first mo...