After a new product is launched the cumulative sales S(t) (in $1000) t weeks after launch is given by S(1) 72 -0.364 1 + 9e a. Determine the cumulative amount in sales 3 weeks after launch. Round to the nearest thousand. b. Determine the amount of time required for the cumulative sales to reach S70,000. c. What is the limiting value in sales?

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