3. The following equation summarizes the trend portion of quarterly sales of condominiums over a long cycle. Sales also exhibit seasonal variations. Using the information given, prepare a forecast of sales for each quarter of next year (not this year), and the first quarter of the year following that. F-40-6.5t+2+3 where F+=Unit Sales t=0 at, the first quarter of last year Quarter Relative 1 1.1 2 1.0 3 .7 4 1.2