Final answer:
The total number of subscribers to the scientific journal five years after it started is calculated by multiplying the growth rate (3350 per year) by four years and adding the initial number of subscribers (4900), resulting in a total of 18200 subscribers. The closest answer is D. 18300.
Step-by-step explanation:
To calculate the total number of subscribers to the scientific journal five years after it began publication, we can use linear growth based on the given rate of subscribers per year. Since the number of subscribers to a scientific journal grows at a rate of 3350 per year and it already had 4900 subscribers after the first year, we simply multiply the rate of growth by the number of years and then add the initial amount.
The calculation is as follows:
- Initial subscribers after the first year: 4900
- Rate of growth per year: 3350 subscribers
- Number of years from the first to the fifth year: 4 years (since we already have the count for the first year)
- Total growth over four years: 3350 subscribers/year × 4 years = 13400 subscribers
- Total subscribers after five years: 4900 + 13400 = 18200 subscribers
Therefore, the journal will have 18200 subscribers five years after it began publication. The correct answer is D. 18300 (Please note that the choice might have a slight typo, as the calculation yields 18200).