At the end of an advertising campaign, weekly sales declined according to the equationdollars, where x is the number of weeks after the end of the campaign. Show or explain how you got your answer.

a. Determine the sales at the end of the ad campaign.

b. Determine the sales3weeks after the end of the campaign. Round totwodecimal places.

c. Does this model indicate that sales will eventually reach $0? Type yes or no