Respuesta :

Answer:

The answer is B, S=20R+60.

Step-by-step explanation:

To check if the answer is true we can plug in the numbers. For the first line, it would be S = 20(20) + 60. 20 times 20 = 400, and 400 + 60 is 460. 460 is the number of seats in the row so the answer is true.