Help please I am not sure if is right

his question: 1 point(s) possible Submit quiz Use the price-demand function below, to answer parts (A), (B), and (C). p(x) =75-3x 1 SX S 20 (C) Choose the best graph of the revenue function using the points from the table. O A. OB. 500- Ay 500- (A) What is the revenue function? R(X) = What is the domain of the revenue function? 24 20 O A. [1,20] O C. OD. O B. [0,20] Ay 500 500-T O C. [0,75] O D. [0,468] (B) Compete the table. 24 20 Revenue Revenue x (Millions) R(x) (Millions $) 1 72 4 286.4 8 569.6 12 468 16 432 20 300