Challenge A cell phone plan costs $27.80 per month for 700 minutes of talk time. It costs an additional $0.04 per minute for each minute over 700 minutes. To get e-mail access, it costs 20% of
the price for 700 minutes of talk time. Your bill, which includes e-mail, is the same each month for 7
months. The total cost for all 7 months is $253.68. Write and solve an equation to find the number of
minutes of talk time you use each month.
Let m represent the number of minutes over 700 minutes each month. Which equation represents the
given situation?
A. 253.68 = 7(m + 27.80)
B. 253.68 = 7(m + 27.80 +0.80(27.80))
C. 253.68 = 7(0.04m + 27.80 +0.20(27.80))
D. 253.68 = 7(0.04m + 27.80)
You use
minutes of talk time each month.