Jacy wants to buy a phone. she considers the two following plans: plan a: $20 per month plus 12 cents per minute. plan b: $26 per month plus 8 cents per minute. b) what length phone call will cost the same under plan a and plan b? what is the cost? show your work. c) the phone company is considering a third plan. the new plan is based on per-minute charges only. if a phone call of the same length and cost as the call in part 2 is made under this new plan, what must the per-minute charge be? show work. 15 points if my answer for a is wrong, let me know.