A cell phone plan costs $30.70 per month for 700 minutes of talk time. It costs an additional $0.05 per minute for each minute over 700 minutes. To get e-mail access, it costs 10% of the price for 700 minutes of talk time. Your bill, which includes e-mail, is the same each month for 9 months. The total cost for all 9 months is $339.03. 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.
339.03=9(m+30.70+0.90(30.70))
B.
339.03=9(0.05m+30.70+0.10(30.70)) Your answer is correct. C.
339.03=9(m+30.70)
D.
339.03=9(0.05m+30.70)
You use _ minutes of talk time each month.