Final answer:
To find out how much money Adriana has left after 5 weeks, deduct her weekly expenses from her initial balance.
Step-by-step explanation:
To calculate how much money Adriana has after 5 weeks, we need to deduct her weekly expenses from her initial balance.
Let d represent the amount she spends on music downloads per week. Since she spends d dollars every week, after 5 weeks, she would have spent 5d dollars on music downloads.
So, her total expenses would be 5d + 15 dollars. We can subtract this total from her initial balance of $150 to find out how much money Adriana has left after 5 weeks.