Suppose the supply function for avocados is Qequals58plus15pminus20p Subscript f, where p Subscript f is the price of fertilizer. Holding the price of fertilizer constant, by how much would the price of avocados need to rise to cause an increase of 105 (million lbs. per month) in the quantity of avocados supplied? To increase the quantity of avocados by 105 million lbs. per month, the price of avocados would need to change by $ nothing. (Enter your response rounded to two decimal places.)