Chu clocks has the following demand history for the past six months: january 54 february 62 march 74 april 65 may 50 june 58 using a 3-month moving average, find the july forecast. using a weighted moving average with weights of 0.7, 0.2, and 0.1, find the july forecast. using exponential smoothing with α = 0.25 and a june forecast of 56, find the july forecast.

Martha is one producer in the perfectly competitive jelly industry. last year, martha and all of her competitors found themselves earning economic profits. if there is free entry and exit, what do you expect to happen to the number of suppliers in the industry and the price of jelly? the number of suppliers will increase, and the price of jelly will fall. the number of suppliers will decrease, and the price of jelly will increase. the number of suppliers will increase, and the price of jelly will increase. the number of suppliers will decrease, and the price of jelly will fall.