The current student population of New York City is 1400. If the population decreases at a rate of 9.1% each year. What will the student population be in 9 years?
To find the student population in 9 years, we need to calculate 9.1% of the current population every year and subtract it from the previous year's population.
After 1 year:
Population = 1400 - (9.1/100 * 1400) = 1400 - 127.4 = 1272.6 ≈ 1273
After 2 years:
Population = 1273 - (9.1/100 * 1273) = 1273 - 115.843 = 1157.157 ≈ 1157
After 3 years:
Population = 1157 - (9.1/100 * 1157) = 1157 - 105.287 = 1051.713 ≈ 1052
...
After 9 years:
Population = 1400 - (9.1/100 * 1400) * 9
Population = 1400 - 127.4 * 9
Population = 1400 - 1146.6
Population = 253.4
Therefore, the student population in 9 years will be approximately 253.