16 + 0.03n, where n is the A phone company charges for service according to the formula: C(n)
number of minutes talked, and C(n) is the monthly charge, in dollars.
Minutes
The rate of change in this equation is:
Dollars
The initial value in this equation is:

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:

step-by-step explanation:

is their an equation anywhere i can take a   look at it and see if i am right.

ƒ = 0.03b

hope this ( :

step-by-step explanation: