A business has a savings account that earns a 3% annual interest rate. At the end of 1996, the business had $4,000 in the account. The formula F = P(1 + r/100) t is used to determine the amount in the savings account.
Fis the final amount
p is the initial investment amount,
• r is the annual interest rate, and
• t is the time in years.
To the nearest dollar, how much did the business initially invest in 1991?

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

$15 each

step-by-step explanation:

$45/3 children= $15 each

i think the amount would be $140.62

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0