Shoreline Park in Mountain View, California, has kept close tabs on the number of patrons using the park since its opening in January 1993. For the first six months of 2018, the following figures were recorded

Month	# of Patrons
Jan	133
Feb	183
Mar	285
Apr	640
May	1876
Jun	2550

Assume that the intercept and slope of the series at the end of June are:

S June: 1918

G June: 406

Use these numbers as the initial values of slope and intercept required in Double Exponential Smoothing (DES) method. Assume that Alpha = .15 and Beta = .10 for all calculations.

a) What is the one-step ahead forecast made in June for July? What is the multi-step ahead forecast made in June for August

Please show all work and formulas