The research department of a company makes the following estimates:
1) a weekly demand of 200 toasters at a price of $16 per toaster
2) a weekly demand of 300 toasters at a price of $14 per toaster
Use the research department's estimates to express p as a function of x, and find the domain of this function
Price-demand equation (math)
2009-02-24 9:44 pm
回答 (1)
2009-02-24 10:36 pm
✔ 最佳答案
Assume linear relationship between p and x.Let p = mx + c
16 = 200m + c ...(1)
14 = 300m + c ...(2)
(1)-(2):
2 = -100 m
m = -1/50
Sub into (1)
16 = 200*(-1/50) + c
c = 20
p = -x/50 + 20
When p=0, x=1000
domain of p is 0<=x<=1000
參考: Myself
收錄日期: 2021-04-25 14:23:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20090224000051KK00628