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3.
A cell phone company charges [tex]$45 per month for cell phone service. a. Find a linear equation representing the relationship between x, the number of months of service, and y, the total amount paid in dollars by an existing customer. b. For customers buying a new phone, there is an additional charge of $[/tex]250 for the
phone. Repeat the previous problem for new customers.
c. How are the two graphs of the equations similar? How are they different?