Invested in a mutual fund and at the end of 20 years he has $14,300 in his account. if the mutual fund returned an average yield of 8%, how much did he originally invest

He originally invested  $3,068.04

Step-by-step explanation:

This question is basically asking for  Present value (PV) of one-time cashflow.

Present value formula ; PV =

$14,300 received 20 years from today is a future value so that will be your FV.

FV= 14300

t = 20 years

rate ;r = 8% or 0.08 as a decimal

PV =

PV=14,300 /4.66095714

PV= 3,068.03937

Therefore he originally invested  $3,068.04

the answer   is 200

step-by-step explanation:

this is a problem about poisson probabilities.   i don't know if you've

already studied poisson distributions, or if you have a place to look

to read more about the subject.  

here's how you can see a poisson distribution coming.   when there are

a lot of events that may happen at any time (or any place), and when

you're counting how many of them happen at a particular time (or a

particular place), and each event is independent of the others, then

the result is a poisson distribution.   this is roughly true for the

chocolate chips; one chip being in a cookie has only a small effect on

the probability that another chip will be in the cookie.

once you know you have a poisson distribution, you know a lot.   there

is only one parameter to a poisson distribution, so if you know the

mean, you know everything.   the form of the distribution is

  probability of n chips = {[e^(-x)]*(x^n)} / (n! )

21.4 i did it already for s1

step-by-step explanation: