Answer: My friend has sold 7 subscriptions more than me after 5 weeks.
Step-by-step explanation: Given that me and my friend are selling magazine subscriptions for a fundraiser. After w weeks, I have sold (3w+4) subscriptions and your friend has sold (5w+1) subscriptions.
We are to find the number of subscriptions that my friend has sold more than me after 5 weeks.
We have
the number of subscriptions sold by me after 5 weeks will be
[tex]S_5=3\times5+4=15+4=19,[/tex]
and the number of subscriptions sold by my friend after 5 weeks will be
[tex]S'_5=5\times5+1=25+1=26.[/tex]
Therefore,
[tex]S'_5-S_5=26-19=7.[/tex]
Thus, my friend has sold 7 subscriptions more than me after 5 weeks.
