HELPPP. Does anyone know what formula i would use for this ?
5. Jackie deposited $5 into a checking account in February. For each month following, the deposit
amount was doubled. How much money was deposited in the checking account in the month of
August?

Question

HELPPP. Does anyone know what formula i would use for this ?
5. Jackie deposited $5 into a checking account in February. For each month following, the deposit 
amount was doubled. How much money was deposited in the checking account in the month of 
August?

amistre64 · Answer

f5
m10
a20
m40
j80
j160
a ...

anonymous · Answer

huh ?

amistre64 · Answer

Bn = B0*2^(n-1)

but then youd need to adjust for feb = 0 and calculate the n for august

amistre64 · Answer

you double the amount each month ... its not that hard of a brute math that a formula is needed.

anonymous · Answer

i just need to know the name of the formula .

amistre64 · Answer

a name eh ... 

cant say that i know their names in particular

amistre64 · Answer

geometric comes to mind .... but not sure if thats what is needed

anonymous · Answer

i thought geometric sequence but im not sure.

amistre64 · Answer

feb = 5
mar = 5*2
apr = 5*2*2
may = 5*2*2*2

its geometric

anonymous · Answer

thanks . i already had the answer and worked it out. i just didnt remember what formula i used.

amistre64 · Answer

:)