Hint for (a) :
for one year.
for years (animals)
1. suppose the population of a species decreases at a rate of 3.5 % each year. In the place you are studying, there are 80 of these animals.
a) predict the number of animals that will remain after ten years
b)at this rate, after how many years will the population first drop below 40 animals?
2. Area=36in squared Perimeter= 36 in
Write equation using one variable and find dimesions of the rectangle.
I need help on how to solve this.
Please show work how you did solve the two problems!
Thank You Very Much!!!
Hello, tecktonikk!
They're teaching exponentials and logarithms in 9th grade??
Every year, the population is only 96.5% of the previous year's population.1. Suppose the population of a species decreases at a rate of 3.5 % each year.
In the place you are studying, there are 80 of these animals.
a) Predict the number of animals that will remain after ten years
The formula we want is: . . where is the number of years.
In ten years: .
When will be less than 40?b) At this rate, after how many years will the population first drop below 40 animals?
We have: .
Take logs: .
Divide by . . . a negative quantity.
. .
The population will drop before 40 in about years.