Question

Dr. Dre is the founder and CEO of Aftermath Entertainment and Beats Electronics. On the release day, Dr. Dre sold 300 Beats and averaged 30 Beats per day after that.

Which equation models the number of Beats, b, Dr. Dre sold after d days?
A. d=30+300b
B. d=300+30b
C. b=30+300d
D. b=300+30d

Answer 1

The correct equation that models the number of Beats sold by Dr. Dre after d days is D. b = 300 + 30d, as it includes both the initial amount sold and the average daily sales multiplied by the number of days.

Step-by-step explanation:

The question asks to find the equation that models the number of Beats headphones Dr. Dre sold after d days. To construct our equation, we start with the initial amount sold, which is 300 on the release day, and then add the average number of Beats sold per day after that, which is 30, multiplied by the number of days, d.

The correct model for this scenario is:

D. b = 300 + 30d

This equation states that the total number of Beats sold, b, after d days is equal to 300 (the initial amount sold) plus 30 times d, where d represents the days passed since the release day.