Given:
551.88 + 341.64b
The coefficient of "B" is 341.64, the best statement that applies to it is:
D. It is the cost for one cable box with DVR and HD service for one year.
Cable boxes: $ 3.49 per cable box
HD Service: $ 9.99 per cable box
DVR: $ 14.99 per cable box
Total : $ 28.47
multiply 12 months
Annual cost $341.64