The number of people living in a country is increasing each year exponentially so that the number of people 5 years ago was 4 million. the number of people in five years time is projected to be 6.25 million. what is the present population of the country?

You could attempt doing a log mean.

If your population was growing linearly, you could simply do:

Y2=6.25million, Y1=4million

This would work since you are right in the middle of a straight line.

However, since your population is growing exponentially, you would take a log mean, which would look like this:

This will give you the middle number with respect to an exponential curve. This would only work because the time difference is 5 years in both directions, so if the time difference was not equal in both directions, you'd have to develop an exponential equation that would fit your data.

the answer is d

step-by-step explanation:

y+3=-4(x-2)

y+3=-4x+8

  -3         -3  

y=-4x+5

hello :

70y^8 + 30y^6 = 2 ( 35 y^8 + 15y^6)

the lenght is : 35 y^8

the width is : 15y^6