A research study in 2000 found that there were 440 coyotes in a given region. The coyote population is expected to grow at a rate of 17% each year. In what year will the population first exceed 10,000?

Question

perl · Answer

Let t = # of years since 2000 
Then we have:
$$ \Large {
y = 440 ( 1 + .17)^t 


} $$

anonymous · Answer

thanks

anonymous · Answer

can you help me with one more problem as well

anonymous · Answer

Sodium-24 has a half-life of 15 hours. How many grams of a 900 g sample will remain after 90 hours?
		
28.125 g
		
14.0625 g
		
7.5 g
		
7.03125 g

perl · Answer

We can use the equation:
$$ \LARGE {
y = 900 \left( \frac12 \right)^\frac{t}{15} 


} $$