Customers of a phone company can choose between two service plans for long distance calls. the first plan has no monthly fee but charges $0.16 for each minute of calls. the second plan has a $17 monthly fee and charges an additional $0.12 for each minute of calls. for how many minutes of calls will the costs of the two plans be equal?

minutes

Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem