Final answer:
After purchasing the Beyoncé CD for $15.99, Jamie can use the remaining balance of her $50 gift card to rent 8 movies, with each movie rental costing $3.99.
Step-by-step explanation:
Jamie intends to use a $50 gift card to purchase a Beyoncé CD and rent some movies from Amazon. She has an expression to represent her total spending: 15.99 + 3.99x, where 15.99 is the cost of the Beyoncé CD and 3.99 is the cost per movie rental, with x representing the number of movies she rents.
To calculate how many movies Jamie can rent, we first subtract the cost of the CD from the total amount available on the gift card, which is $50. This gives us:
50 - 15.99 = 34.01
With $34.01 left, we then divide this amount by the cost of renting one movie to find out how many movies she can rent:
34.01 / 3.99 ≈ 8.52
Since Jamie cannot rent a fraction of a movie, we round down to the nearest whole number. Therefore, Jamie can rent 8 movies with her $50 gift card after buying the CD.