Question: John has believed for some time that flower sales are related to consumer income. Recently in a trade magazine, he found some interesting data. In a market where average income was $22,000, flower sales were $60,000. In another market where all factors were the same, except that income averaged $29,000, flower sales were $77,500. The article indicated that the relationship between income and flower sales was linear.

1. Determine the formula for this relationship. Be careful about which variable is independent and which is dependent.
2. Interpret the meaning of the equation's intercept value.
3. Interpret the meaning of the slope value.
4. If average income in John's market area is $34,000 and he has the only flower shop, how many flowers should he expect to sell?
5. Sue is a friend of John's and has a flower shop in another state. She told John that in her market area, a total of 50,000 flowers were sold. What is the average income in that market?

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