Answer:
a) 
b) The population increases 7.1% each year.
Step-by-step explanation:
The continuous population growth model is given by:
In which 
is the population after t years, 
is the initial population and r is the growth rate.
In this problem, we have that:
A population grows from its initial levelof 22,000 at a continuous growth rcte of 7.1% per year.
This means that 
a) Write a function to model the population increase.
b) By what percent does the populaiion increase each year?
So the population increases 7.1% each year.
Answer:11.5cm, 23cm, 34.5 cm, 69cm
Step-by-step explanation:
1+2+3+6=12
138/12=11.5
First side=11.5cm
Second side=11.5x2=23cm
Third side=11.5x3=34.5cm
Fourth side=11.5x6=69cm
What is the question that your trying to give off
Answer:
x = 5
Step-by-step explanation:
Answer:
2.5 hours
Step-by-step explanation:
To get the hourly speed, we need to divide 430 by 5.
This means that the train is going at a speed of 86 miles/hour.
Since we need to find the hour, we need to divide 215 miles by 86 miles/hour.
We can use the keep change flip to do 
This would give us 2.5 hours.
