Plot three points on the graph of function f(x)= -3(x - 2)^2+1

Acell phone provider offers a plan that costs $40 per month plus $0.20 per text message sent or received. a comparable plan costs $50 per month but offers unlimited text messaging. complete parts a. and b. below. a. how many text messages would have to be sent or received in order for the plans to cost the same each month? in order for the plans to cost the text messages would have to be sent or received.