Question

Suppose a rabbit population of 10 rabbits quadrupled every year. How many rabbits will there be after 5 years?

Answer 1

20+10

Explanation:

Quadrupled means times 4. If the population went up by 4 every year for 5 years, that would be 20. And 20 added to your original number (10) is 30.

Answer 2

10,240

Explanation:

Each year, the population is multiplied by 4, so after 5 years, the population is 4^5 times the original number:

10 × 4^5 = 10×1024 = 10,240

There will be 10,240 rabbits after 5 years.