Brian has an online video channel for tutoring physics. The total number of subscribes to Brian's page
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Brian has an online video channel for tutoring physics. The total number of subscribes to Brian's page is changing at a rate of r(t) = 14 + 1.8t subscribers per week where t is the time in weeks. At time t = 7 weeks Brian has 438 subscribers. Which expression can be used to determine how many subscribers Brian has by week 15?
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