edenftilahun edenftilahun 17-12-2020 Mathematics contestada A cell phone plan costs $200 to start. Then there is a $50 charge each month. What is the total cost (start up fee and monthly charge) to use the cell phone plan for 1 month? What is the total cost for x months (answer should be in the form of an expression)? Is there a proportional relationship between time and the cost of the cell phone plan? ( yes or no)
