Question

The world population in the year 2011 was approximately 7 x 10^9 people. If the population doubles in 100 years, how many people will be on the earth in the year 2111? Write your answer in scientific notation.

Answer 1

Any ideas?

Answer 2

Seriously not at all :(

Answer 3

Do you know what the word "double" means?

Answer 4

It could be 10 times 10, isnt it?

Answer 5

No, it means " 2 times "

Answer 6

i thought, i will have to make 10 exponent 10 ? so it is not 7 * 10 ^10

Answer 7

No.

Answer 8

So

Answer 9

what is it and how?

Answer 10

"If the population doubles in 100 years," means whatever the population is now; it will be 2 times that in 100 years from now.

Answer 11

200

Answer 12

?

Answer 13

Not 2 times 100 years, but 2 times the population.