Mrs. Black has one begonia plant. If she buys two begonia plants each year for every one she has, how many will she have in four years?

Please explain the answer.

3 answers

1st year she bought 2..1 times 2 is 2
2nd year she bought 6..3 times 2 is 6
3rd year she bought 12..6 times 2 is 12
4th year she bought 24...12 times 2 is 24
The answer is she bought 24 plants in 4 yrs!!!
well my teacher read the book and she says 27.
im pretty sure that was wrong though cuz when i did the math i got 36 unless 9 died. lol