. An automobile company is ready to introduce a new line ofhybrid cars through a national sales campaign. After test marketingthe line in a carefully selected city, the marketing researchdepartment estimates that sales (in millions of Ghana Cedis) willincrease at the monthly rate of S'(t) = 20t − 15e−0.15t 0 ≤ t ≤ 36t months after the campaign has started. (a) What will be the totalsales S(t) in t months after the beginning of the national campaignif we assume no sales at the beginning of the campaign? (b) Whatare the estimated total sales for the first 12 months of thecampaign? (c) When will the estimated total sales reach 100 millionCedis?
