A cell phone plan costs $27.80 per month for 500 minutes of talk time. It costs an additional $0.08 per minute for each minute over 500 minutes. To get e-mail access, it costs 10% of the price for 500 minutes of talk time. Your bill, which includes e-mail, is the same each month for 6 months. The total cost for all 6 months is $216.60. Write and solve an equation to find the number of minutes of talk time you use each month.

Out of five men and five women, we form a committee consisting of four different people. assuming that each committee of size four is equally likely, find the probabilities of the following events: 1. the committee consists of two men and two women 2. the committee has more women than men. 3. the committee has at least one man. for the remainder of the problem assume that alice and bob are among the ten people being considered. 4. both alice and bob are members of the committee.