Question

A cell phone plan costs $19.70 per month for 600 minutes of talk time. It costs an additional $0.07 per minute for each minute over 600 minutes. To get e-mail access, it costs 30% of the price for 600 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 $221.90. Write and solve an equation to find the number of minutes of talk time you use each month.​

Answer 1

The number of minutes should be 68.

Given information:

A cell phone plan costs $23.70 monthly for 700 minutes of talk time. It costs an additional $0.06 per minute for each minute over 700 minutes.

Getting e-mail access costs 20% of the price for 700 minutes of talk time. The total cost for all 6 months is $195.12.Equation and number of minutes:The equation is 195.12=6(0.06m+23.70+0.20(23.70))195.12 = 0.36m + 142.2 + 28.4424.48 = 0.36mm = 68 minutes