Math Unit 3

Roger's Electronics seils a variety of computers and other electronic devices. During the month of July, Roger's sold the following numbers of computers: 

Dates                                           Total computers sold

July 1-4                                       68

July 1-12                                    204

Part A:

Assuming that the proportional relationship between computers sold and days continues, write an equation that shows the amount of computers (y) sold per day (X) in July.

Part B:

How many computers were sold during the entire month of July (31 days long)?