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# C2 question watch

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1. Hi I need help with this question.
An internet site has 3600 subscribers at the start of a promotional campaign.
In a model of the results of the campaign, it is assumed that the site will gain 200 new subscribers in the first week and that in subsequent weeks the number of new subscribers will be 15% greater each week.
a Show that, according to this model, the site will gain 304 new subscribers in the fourth week of the campaign. (2)
b Find the total number of subcribers to the site predicted by the model after ten weeks
of the campaign, assuming that no subscriptions are cancelled in this period.
2. #NCSMathsDiagnostics
3. ...Anyways Month 1 the company gains 2000 Subscribers and each week they gain 15% increase therefore the multiplier 1.15. The nth term for the number of new subscriber per week is therefore 200*1.15^n-1 . Where the n is the week number. To calculate the 4th week you calculate u4. For the last part of the question you work out S10. Where Un=3000+ 200*1.15^n-1.

Sorry for baiting your life out 😂😂
-Fellow NCS student
4. (Original post by ManLik2)
...Anyways Month 1 the company gains 2000 Subscribers and each week they gain 15% increase therefore the multiplier 1.15. The nth term for the number of new subscriber per week is therefore 200*1.15^n-1 . Where the n is the week number. To calculate the 4th week you calculate u4. For the last part of the question you work out S10. Where Un=3000+ 200*1.15^n-1.

Sorry for baiting your life out 😂😂
-Fellow NCS student
Thanks😂

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