plz explain thx

Enter only the value, without the % sign, spaces, commas, or any other symbols. Part A: Questions to Answer with your Calculator The following is a linear trend fitted to a series expressed in thousands of dollars. Tt = 367.52 + 0.49t , where t is expressed in years. a. If we assume that the series is a flow variable, what is the value of the trend in September 1963 in thousands of dollars? Round your answer to the nearest second decimal. It = b. Using the above trend equation, what is the trend value for the fourth quarter of 2005 in thousand of dollars? Round your answer to the nearest second decimal. It = c. Using the above trend equation, what is the annual variation of the trend in dollars? It =