day 1 = 2
day 2 = 4
day 3 = 8
day 4 = 16
day 5 = 32
day 6 = 64
day 7 = 128
day 8 = 256
day 9 = 512
day 10 = 1024
0.01×290 equals $1,237,940,039,285,380,274,899,124,224
10 dollars doubled for every two days for a month
If the first dollar was yours, then you would have $1,073,741,824 after 30 days.(When you take this number into class, don't forget to also prepare an answerfor the question "How did you figure that out ?")
If you start with a quarter (0.25) and double your money every day for 30 days, you would have (0.25 \times 2^{30}) by the end of the period. This calculation results in approximately $268,435,456. So, after 30 days of doubling your quarter, you would have over 268 million dollars.
And here we see that if a mathematical problem can be open to interpretation, it is possible to obtain vastly different results. Both experts agree that something gets tripled every two days, fifteen triplings in total. The first, showing the importance of compounding, posits that the first dollar gets tripled to three dollars after two days and that total gets tripled two days later, and subsequent totals etc. The second thinks that a dollar gets tripled after two days and that process gets repeated. The first solution is more likely the author's original intent, but it's important to state problems unambiguously.
0.01×290 equals $1,237,940,039,285,380,274,899,124,224
10 dollars doubled for every two days for a month
Save a dollar a day, and in a million days you will have a million dollars.
Oh, dude, you're talking about exponential growth here! If you start with $10 and double it every 2 days for 30 days, you'd end up with a whopping $5,368,709,120. Just a casual pocket change, right? So, next time you find a magic money-doubling tree, make sure to water it every 2 days for maximum profit!
If the first dollar was yours, then you would have $1,073,741,824 after 30 days.(When you take this number into class, don't forget to also prepare an answerfor the question "How did you figure that out ?")
28 days
no your period can be anywhere from 2 to seven days
If you start with a quarter (0.25) and double your money every day for 30 days, you would have (0.25 \times 2^{30}) by the end of the period. This calculation results in approximately $268,435,456. So, after 30 days of doubling your quarter, you would have over 268 million dollars.
If you mean that you start with 1.28, then after 23 days you would have: 1.28 x 223
usually every 27 days
A pregnant woman's hCG level's double every two days.
After 9 days, the population of ladybugs would double every 3 days, so it would double 3 times. 2^3 = 8. Therefore, the population at the end of 9 days would be 30 ladybugs x 8 = 240 ladybugs.