Respuesta :

The sum:

(502 + 8d ) + ( 502 + 3d + 4 )

Clearing the brackets, we get,

502 + 8d + 502 + 3d + 4

Collecting the like terms, we get,

8d + 3d + 502 + 502 + 4

11d + 1008

The correct answer: 11d + 1008