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.$)$

$\backslash$table$[[$Period$,$New Accounts,Period,New,Accounts,Period,New Accounts$],[1,200,6,,237,11,281],[2,219,7,,246,12,275],[3,211,8,,250,13,289],[4,226,9,>,255,14,288],[5,235,10,,267,15,308]]$