A population of 2000 starfish has a yearly per capita population growth rate of 0.012. By next year, how do you expect population size to have changed?

Assume that the population grows exponentially according to the equation d N d t = r N

It will increase by 50 starfish
It will increase by 24 starfish
It will increase by 100 starfish
It will increase by 200 starfish

It will increase by 24 starfish

Step-by-step explanation:

The population is modeled by the following differential equation:

Which has the following solution:

In which N(0) is the initial population and r is the growth rate.

A population of 2000 starfish has a yearly per capita population growth rate of 0.012.

This means that

By next year, how do you expect population size to have changed?

This is N(1).

2024 - 2000 = 24

So the correct answer is:

It will increase by 24 starfish

walter needs to make at least 5 more cookies but no more than 40. 5 ≤ x ≤ 40

step-by-step explanation:

20 ≤ x + 15 ≤ 55

subtract 15 from all parts

20-15 ≤ x + 15-15 ≤ 55-15

5 ≤ x ≤ 40

this means how many more cookies he has to make

walter needs to make at least 5 more cookies, but no more than 40 cookies; 5 ≤ x ≤ 40