In 1880, total advertising dollars spent in the United States was exist200 million. By 1920, that figure had grown to exist3 billion. What percentage increase is that? A popular radio program in the 1950s had an audience of 24 million listeners a week, airing on 1, 600 radio stations. On average, how many people were listening on each of those radio stations? Tipton Industries' green marketing campaign has resulted in a 4 percent increase in sales over last year. If sales totaled exist500,000 last year, what are sales this year