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Question 567795: I need help with this I am also looking for a paid tutor anyone intrested?
Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper formatting.
1. In this problem, we analyze the profit found for sales of decorative tiles. A demand equation (sometimes called a demand curve) shows how much money people would pay for a product depending on how much of that product is available on the open market. Often, the demand equation is found empirically (through experiment, or market research).
Suppose a market research company finds that at a price of p = $30, they would sell x = 62 tiles each month. If they lower the price to p = $20, then more people would purchase the tile, and they can expect to sell x = 72 tiles in a month’s time. Find the equation of the line for the demand equation. Write your answer in the form p = mx + b. Hint: Write an equation using two points in the form (x,p).

Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
You could start by finding the slope (m) of the line containing the two given points (62, 30) and (72, 20).
m+=+%28p%5B2%5D-p%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29 Substitute x%5B1%5D+=+62, x%5B2%5D+=+72, p%5B1%5D+=+30, and p%5B2%5D+=+20
m+=+%2820-30%29%2F%2872-62%29
m+=+-10%2F10
m+=+-1 so...
p+=+-x%2Bb To find b, substitute the x- and p-values from either of the two given points. Let's use (62, 30)
30+=+-62%2Bb
b+=+92 so the demand equation is:
p+=+-x%2B92
graph%28400%2C400%2C-10%2C110%2C-5%2C110%2C-x%2B92%29