Carla's cell phone company charges her $1 for sending 4 text messages and $1.50 for sending 6 text messages. If the amount Carla is charged by her cell phone company and the number of text messages are in a proportional linear relationship, at what rate is she being charged to send a text message?

Can someone answer it, and plot it, for 20 points and brainliest answer? p. s. they're the same ! : )

Asays "we are both knaves" and b says nothing. exercises 24–31 relate to inhabitants of an island on which there are three kinds of people: knights who always tell the truth, knaves who always lie, and spies (called normals by smullyan [sm78]) who can either lie or tell the truth. you encounter three people, a, b, and c. you know one of these people is a knight, one is a knave, and one is a spy. each of the three people knows the type of person each of other two is. for each of these situations, if possible, determine whether there is a unique solution and determine who the knave, knight, and spy are. when there is no unique solution, list all possible solutions or state that there are no solutions. 24. a says "c is the knave," b says, "a is the knight," and c says "i am the spy."

Find the area of a parallelogram with base 15 yards and height 21 2/3