英文函数题A vendor can sell 500 souvenirs per day at a price of $3.00 each.Each increase of 30¢ in price decreases the number of sales by 25 per day.Souvenirs cost the vendor $1.60 each.What price should be charged to maximize profit?
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英文函数题A vendor can sell 500 souvenirs per day at a price of $3.00 each.Each increase of 30¢ in price decreases the number of sales by 25 per day.Souvenirs cost the vendor $1.60 each.What price should be charged to maximize profit?
英文函数题
A vendor can sell 500 souvenirs per day at a price of $3.00 each.Each increase of 30¢ in price decreases the number of sales by 25 per day.Souvenirs cost the vendor $1.60 each.What price should be charged to maximize profit?
英文函数题A vendor can sell 500 souvenirs per day at a price of $3.00 each.Each increase of 30¢ in price decreases the number of sales by 25 per day.Souvenirs cost the vendor $1.60 each.What price should be charged to maximize profit?
(x-1.6)[500-(x-3)/3*(25/10%)]=(x-1.6)(250-250x/3)=-(250/3)(x-1.6)(x-3)
=-(250/3)(x^2-4.6x+4.8)=-(250/3)[(x-2.3)^2-0.49]
The price is 2.3 each.