Question

Brooklyn has a goal to save $8,000 to buy a new entertainment system. In order to meet that goal, she deposited $4,132.79 into a savings account. If the account has an interest rate of 4.8% compounded quarterly, approximately when will Brooklyn be able to make the purchase?

how would i solve this ?

Answer 1

you can use the equation A=P(1+r)^t
A=amount you end with
P=amount you start with
r=rate
t=time

Answer 2

sub in your info and solve

Answer 3

ok?

Answer 4

do i have to use ln?

Answer 5

?

Answer 6

i'll help you

Answer 7

log because the time is unknown, would i bring it down with ln?

Answer 8

oh i'm not using log...

Answer 9

how are you bringing down the t for time?

Answer 10

oh i got it

Answer 11

scolen you would use ln

Answer 12

ill just plug in the choices for in t and see which one gives me 8000