Scientists studying a population of endangered bats find that the population is decreasing by 16% per year. The current population size is 1,800. What function models the number of years, f(n) , it will take the population to reach a size of n individuals? Replace the values of a and b in the equation to create the model.

f(n) = 1800(1-0.16n)

the amount you'd have after the work is $1.55

step-by-step explanation:

you subtract 95% from $31.

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: