Question 317340
Please help make these problem in to an equation and solve

1. elaine's height is 67 inches. Determine in terms of an inequality, those weights W that will keep her body mass index below 25. Do not know what to start with an equation.

2. A long distance telephone call using down east calling costs 10 cents for the first minute and 8 cents for each additional minute. The same call placed on long call systems costs 16 cents for the first minute and 6 cents for each additional minute. For what length phone calls is down east calling less expensive?

Thanks for any help you can give.