The following table shows the revenue R(t, f) in thousands of dollars at a movie theatre as a function of tickets sold I? and the number of snacks sold f. a) What is the revenue if the theatre sells 200 snacks and 400 tickets? Include units. b) Plot the cross section of the revenue function where t : 300. Ensure you label your axes. Explain what the graph is showing in the real-world context. c) Plot the cross section of the revenue function where f : 600. Ensure you label your axes. Explain what the graph is showing in the real-world context. d) Estimate Rt (200, 800). Include units and interpret your answer. e) Estimate Rf(200, 800). Include units and interpret your answer. f} Using your answers in parts d and e, estimate the revenue if the theatre sells 240 tickets and 790 snacks