Respuesta :

Solution

- The left column gives the number of boxes sold while the right column shows the corresponding badges earned.

- Thus, b(20) simply means that selling 20 boxes, would earn you 3 badges since the right column has a 3 corresponding to 20 in the boxes sold column.

- Thus, we have that someone who sells 20 boxes earns 3 badges.

Final Answer

OPTION A