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?

Question

Please explain the answer.

Answer 1

every year she has 3 times as many plants

1+3+9+27+81 = 121

Answer 2

first year 1
second year 2+1
third year 6 +2+1
fourth year=18+6+2+1
total= sum above

Answer 3

24 plants

first year 1+2=3
second year 3x2=6
third year 6x2=12
fourth year 12x2=24

Answer 4

First year
1+ 2=3
Second year
3+2+2+2=9
Third year 9+2+2+2+2+2+2+2+2+2=27
Fourth year
27+[27•2]=81

Answer 5

You times by three every year:
First year=3
Second year=9
Third year=27
Fourth year=81

Answer 6

Thank you