I cannot figure out part B, the second photo, any help woukd be appreciated!

Problem 3-9 (Algo) a. Obtain the linear trend equation for the following data on new checking accounts at Fair Savings Bank and use it to predict expected new checking accounts for periods 16 through 19. (Round your intermediate calculations and final answers to 2 decimal places.) Period New Accounts Period New Accounts Period New Accounts 1 200 6 236 11 2 281 213 7 246 3 12 275 211 8 250 13 4 230 286 9 255 14 288 5 235 10 267 15 313 Answer is complete and correct. Y + 7.16 Y16 Y17 Y18 Y19 195.11 309.67 316.83 323.99 331.15 b.Use trend-adjusted smoothing with a -2 and B = 1 to smooth the new account data in part a. What is the forecast for period 16? Compute the initial trend estimate (T) for Period 5 as follows: (Period 4 data - Period 1 data) / 3. Then compute the initial trend- adjusted forecast (TAF) for Period 5 as follows: Period 4 data + Initial trend estimate for Period 5. Then compute all remaining values (including the S, value for Period 5) using the textbook formulas or Excel template. (Round the "Trend values (Tt) to 3 decimal places and all other intermediate forecast values (TAPt and St) to 2 decimal places. Round your final answer to 2 decimal places.) Answer is complete but not entirely correct. Forecast for period 38104 16