A Store Finds That Its Sales Decline After the End

Multiple Choice

A store finds that its sales decline after the end of an advertising campaign, with its daily sales for the period declining at the rate , where t is the number of days since the end of the campaign. Suppose that units when . About how many sales should the store expect 50 days after the end of the advertising campaign? Round your answer to the nearest whole number. ​

A) 6,641 sales
B) 6,646 sales
C) 6,651 sales
D) 6,644 sales
E) 6,653 sales