题目

math problem #2
massey's student council has decided to invite a hypnotist to the school. a couple years ago they sold 1000 tickets for a price of $4. a survey indicates that for every ticket price increases of 50 cents the number of tickers sold will decrease by 50. what ticket price will result in the greatest revenue of the school?(also find the maximum revenue)
for this type of question i'm not quite sure how to come up with a quadratic equation. can someone help to solve this question, and explain to me how u got it.

提问时间：2020-10-21

答案

suppose y:the revenuewe get y=(1000-50x)(4+0.5x)and now what rest is the calculating progress.y=4000+300x-25x^2=-25(x^2-12x+36)+4900=-25(x-6)^2+4900so,when we increase the price to 6*0.5+4=7 dollars f...