d. observing profits in the goleta area, another dry-cleaning service, diamond cleaners, enters the market. it charges $1.95 per shirt. what is the new average price of washing and ironing a shirt in goleta? illustrate the effect of entry on the average goleta price by a shift of the short-run supply curve, the demand curve, or both. the new average price of washing and ironing a shirt in goleta is . price quantity d s enew price e. assume that california cleaners now charges the new average price and just breaks even (that is, makes zero economic profit) at this price. show the likely effect of the entry on the accompanying cost curve diagram. mc atc ep