The invasive cane toad shows a population growth rate of 7% per year. How many years will it take for this invasive population to grow from 4 million cane toads to 16 million cane
toads?

Please be quick

Given:

Initial population = 4 millions

Growth rate = 7% = 0.07

Present population = 16 millions

To find:

The time it will take for this invasive population to grow from 4 million cane toads to 16 million cane toads.

Solution:

The exponential growth model is

where, P is present population, is iniital population, r is growth rate and t is time in years.

Substitute P=16, and r=0.07, we get

Divide both sides by 4.

Taking log on both sides.

Approx the value to the next integer.

Therefore, the required number of years is 21.

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the least value out of the data shown is 5, maybe if you post a picture with it i could a little more.

step-by-step explanation: