A dandelion population grows at a rate of 8 percent per year. How many years will it take for the population to double?
A. 6.25
B. 7.5
C. 8.75
D. 10
E. 11.25

Question

A dandelion population grows at a rate of 8 percent per year. How many years will it take for the population to double?
A. 6.25
B. 7.5
C. 8.75
D. 10
E. 11.25

anonymous · Answer

Are you still here?

anonymous · Answer

yeah @LilStacie

anonymous · Answer

ok, so in order to double anything, you have to multiply by 200%, right?

anonymous · Answer

yeah that makes sense

anonymous · Answer

since the flower population grows 8% every year, you can find the answer by 200/8.

anonymous · Answer

so 200/8 would be 25, but thats not the answer.

anonymous · Answer

yes, sorry, give me a second

anonymous · Answer

no problem lol

anonymous · Answer

ok. so you need to figure out how many years it takes to double, and it goes up by 1.08% per year. That means each year, you need to multiply 1.08 by the height of the year before it. this can be represented by the function f(x)=1*1.08^x

anonymous · Answer

do you follow me?

anonymous · Answer

yeah I just got the answer Thank you!

anonymous · Answer

your welcome.  I had a little bit of help.