Answer:
Yes they can continue advert but only if the 1% is equivalent or greater than the 10$ spent on advert.
Step-by-step explanation:
There is an increase in revenue by 1%, this indicates that a number of people were attracted to the product because of the advert. With this the company might do better with consistent advert in subsequent year. They can change the channel of advert, improve on the quality of advert or change the time and location of the advert. Infarct, the 1% increment in revenue can be up to 20$ since we are not sure of the exact company's revenue. But if the 1% is far lower than the amount spent, the company can seek advice from professionals.